HP Hewlett Packard Network Router G250 User Manual

Overview for the Avaya G250 and  
Avaya G350 Media Gateways  
03-300435  
Issue 5  
June 2008  
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Contents  
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Contents  
4 Overview for the Avaya G250 and Avaya G350 Media Gateways  
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Contents  
6 Overview for the Avaya G250 and Avaya G350 Media Gateways  
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About this book  
This guide contains information that you need to consider before implementing the Avaya G250  
or Avaya G350 Media Gateway. Use this guide to learn what the G250/G350 can do and to plan  
how you will deploy a G250/G350 in your environment.  
Audience  
The information in this book is intended for use by Avaya technicians, provisioning specialists,  
Business Partners, and customers.  
Downloading this book and updates from the web  
You can download the latest version of Overview for the Avaya G250 and Avaya G350 Media  
Gateways from the Avaya web site. You must have access to the Internet, and a copy of  
Acrobat Reader must be installed on your personal computer.  
Avaya makes every effort to ensure that the information in this book is complete and accurate.  
However, information can change after we publish this book. Therefore, the Avaya web site  
might also contain new product information and updates to the information in this book. You can  
also download these updates from the Avaya web site.  
Downloading this book  
1. Access the Avaya web site at http://www.avaya.com/support.  
2. Click FIND DOCUMENTATION and TECHNICAL INFORMATION by PRODUCT NAME.  
3. Type this book’s document number (03-300435) in the Search box.  
4. Click GO.  
The search results appear.  
5. Locate the latest version of the book.  
6. Click the book title. Your browser downloads the book.  
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About this book  
Related resources  
Title  
Number  
Quick Start for Hardware Installation: The Avaya G250 Media Gateway  
03-300433  
03-300148  
03-300434  
03-300394  
03-300436  
03-300437  
03-300430  
Quick Start for Hardware Installation: The Avaya G350 Media Gateway  
Installing and Upgrading the Avaya G250 Media Gateway  
Installing and Upgrading the Avaya G350 Media Gateway  
Administration for the Avaya G250 and Avaya G350 Media Gateways  
Avaya G250 and Avaya G350 CLI Reference  
Maintenance Alarms for Avaya Communication Manager,  
Media Gateways and Servers  
Maintenance Commands for Avaya Communication Manager,  
Media Gateways and Servers  
03-300431  
03-300432  
Maintenance Procedures for Avaya Communication Manager,  
Media Gateways and Servers  
Technical assistance  
Avaya provides resources for technical assistance within the US and internationally.  
Within the US  
For help with:  
Feature administration and system applications, call the Avaya Technical Consulting  
Support System at 1-800-225-7585  
Maintenance and repair, call the Avaya National Customer Care Support Line at  
1-800-242-2121  
Toll fraud, call Avaya Toll Fraud Intervention at 1-800-643-2353  
8 Overview for the Avaya G250 and Avaya G350 Media Gateways  
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Sending us comments  
International  
For all international resources, contact your local Avaya authorized dealer.  
Sending us comments  
Avaya welcomes your comments about this book. To reach us by:  
Mail, send your comments to:  
Avaya Inc.  
Product Documentation Group  
Room B3-H13  
1300 W. 120th Ave.  
Westminster, CO 80234 USA  
E-mail, send your comments to:  
Fax, send your comments to:  
1-303-538-1741  
Ensure that you mention the name and number of this book, Overview for the Avaya G250 and  
Avaya G350 Media Gateways, 03-300435.  
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About this book  
10 Overview for the Avaya G250 and Avaya G350 Media Gateways  
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Chapter 1: Introduction  
The Avaya CM Branch Gateways (Avaya G250 and Avaya G350 Media Gateways) form part of  
Avaya’s solution for extending communication capabilities from the headquarters of an  
organization to all collaborative branch locations. Avaya CM Branch Gateways help you provide  
the same high quality services to all organization members, regardless of their location.  
The Branch Gateways are high-performance converged telephony and networking devices that  
are located in small branch locations, providing all infrastructure needs in one box — telephone  
exchange and data networking. The Branch Gateways each feature a VoIP engine, WAN router,  
and Power over Ethernet LAN connectivity. The G350 provides full support for legacy IP, DCP,  
and analog telephones. The G250 supports legacy IP and analog telephones. In addition, the  
G250-DCP model supports DCP telephones.  
The G350 is designed for use in an eight to 72 user environment, aimed at branch offices with  
16 to 40 stations. The G250 is designed for use in a two to 12 user environment, aimed at small  
branch offices with two to eight stations.  
Telephone services on a Branch Gateway are controlled by a Media Gateway Controller (MGC).  
You can use an Avaya S8XXX Server running Communication Manager (CM) call processing  
software as an MGC. The gateway integrates seamlessly with Avaya S8700, S8710, S8720,  
S8730, S8500, S8400, and S8300 Servers to provide the same top quality telephony services  
to the small branch office as to the headquarters of the organization.  
Note:  
Note:  
The S8700 Server cannot be upgraded to CM 5.0.  
The Branch Gateways can subtend to an MGC located at the headquarters or the MGC can be  
installed locally. The Branch Gateways can optionally house an internal Avaya S8300 server for  
Enhanced Local Survivability (ELS), providing full MGC functionality in the event that the  
connection with the primary MGC is lost, or as the primary MGC for standalone deployment.  
When the primary MGC is located at a remote location, the Branch Gateway features Standard  
Local Survivability (SLS). SLS provides partial backup MGC functionality in the event that the  
connection with the primary MGC is lost.  
In addition to advanced and comprehensive telephony services, the Branch Gateways provide  
full data networking services, precluding the need for a WAN router or LAN switch.  
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Introduction  
Avaya G350 Media Gateway Overview  
The G350 is a modular device, adaptable to support different combinations of endpoint devices.  
Pluggable media modules provide interfaces for different types of telephones and trunks. A  
combination is selected to suit the needs of the branch. A LAN media module with PoE  
standard compliant Ethernet ports provides support for IP telephones as well as all other types  
of data devices. A range of telephony modules provides full support for legacy equipment such  
as analog and digital telephones.  
Avaya G250 Media Gateway Overview  
The G250 supports the connection of PCs, LAN switches, IP telephones, analog telephones,  
and trunks, via fixed analog and PoE ports on the chassis. A media module slot supports either  
of two WAN media modules, for connection to a WAN. There are several models of the G250,  
with various port combinations for support of analog, BRI, or T1/E1 trunks or DCP telephones,  
as described below.  
The G250 is available in the following models:  
Analog model (G250-Analog). The G250-Analog includes four analog trunk ports, two  
analog line ports, a Fast Ethernet WAN port, and eight PoE LAN ports.  
BRI model (G250-BRI). The G250-BRI includes two ISDN BRI trunk ports, one analog  
trunk port, two analog line ports, a Fast Ethernet WAN port, and eight PoE LAN ports.  
DCP model (G250-DCP). The G250-DCP provides twelve DCP (Digital Communications  
Protocol) ports, as well as four analog trunk ports, two analog line ports, a Fast Ethernet  
WAN port, and two LAN ports.  
DS1 model (G250-DS1). The G250-DS1 provides a T1/E1 and a PRI trunk port, enabling  
support of fractional T1/E1 and PRI. The G250-DS1 also includes one analog trunk port,  
two analog line ports, a Fast Ethernet WAN port, and eight PoE LAN ports.  
Features  
G250 and G350 features include:  
Voice  
- Support for traditional telephones and trunks. In particular, the G250 and G350  
support:  
12 Overview for the Avaya G250 and Avaya G350 Media Gateways  
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Features  
Two built-in line ports to support two analog telephones or incoming analog DID  
trunks  
One analog trunk (four in the G250-Analog and the G250-DCP) to support a trunk  
or trunks of the following types:  
- Loop start  
- Ground start (G350 only)  
- CAMA (G350 only)  
- DIOD (Japan only)  
- Survivability features for continuous voice services  
- VoIP Media Gateway services  
- Call center capabilities  
WAN  
- WAN Quality of Service (QoS)  
- Routing protocols (OSPF, RIP)  
- PPPoE  
- Weighted Fair Queuing (WFQ)  
- Policy-based routing  
- DHCP client, server, and relay functions  
- GRE tunneling  
- Dynamic IP addressing  
- Fax and modem over IP  
- Object tracking  
Server  
- DHCP servers  
- TFTP servers  
LAN  
- Power-over-Ethernet LAN Switching  
- VLANs  
- Spanning Tree Protocols  
- IEEE 802.1D (STP)  
- IEEE 802.1w (RSTP) (G350 only)  
- Port mirroring  
- Port redundancy (G350 only)  
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Introduction  
Security  
- RADIUS Authentication support  
- SNMP traps (v1 and v2 only) sent to the primary controller  
- SNMP v3  
- SSH Authentication support  
- VPN support  
- 802.1x support  
- Secrets management with Master Configuration Key (MCK) encryption  
Provisioning  
- Avaya Communication Manager (CM) server management  
- Extensive alarming and troubleshooting features  
- Modem access for remote administration  
Survivability  
- MGC automatic switchover, migration, and survivability features  
- Modem backup connection to the MGC  
- Standard Local Survivability (SLS)  
- Dynamic Call Admission Control (CAC) for Fast Ethernet, Serial, and GRE tunnel  
interfaces  
- Inter-Gateway Alternate Routing (IGAR)  
Management applications  
- Avaya G250/G350 Manager  
- Embedded Web Manager (G350 only)  
14 Overview for the Avaya G250 and Avaya G350 Media Gateways  
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G250 physical description  
G250 physical description  
Figure 1: The Avaya G250-Analog Media Gateway Chassis  
2
1
6
9
4
7
12  
13  
11  
3
5
10  
8
Figure notes:  
1. V1 — ICC/LSP Slot  
8. USB port  
9. Contact Closure (CCA) port  
10. Ethernet WAN (ETH WAN) port  
11. PoE LAN (ETH LAN PoE) ports  
12. Reset (RST) button  
2. V2 — WAN Media Module Slot  
3. Analog port LEDs  
4. Analog trunks  
5. Analog line ports  
6. System LEDs  
13. Alternate Software Bank (ASB) button  
7. Console port  
Figure 2: The Avaya G250-BRI Media Gateway Chassis  
1
2
4
12  
10  
6
13  
3
15  
8
9
5
7
14  
11  
Figure notes:  
1. V1 — ICC/LSP Slot  
9. Console port  
10. USB port  
11. Contact Closure (CCA) port  
12. Ethernet WAN (ETH WAN) port  
13. PoE LAN (ETH LAN PoE) ports  
14. Reset (RST) button  
2. V2 — WAN Media Module Slot  
3. Analog port LEDs  
4. Analog trunk  
5. Analog line ports  
6. ISDN BRI LEDs  
7. ISDN BRI trunks  
8. System LEDs  
15. Alternate Software Bank (ASB) button  
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Introduction  
Figure 3: The Avaya G250-DCP Media Gateway Chassis  
1
2
8
13  
3
4
9
11  
10  
7
5
6
12  
Figure notes:  
1. V1 — ICC/LSP Slot  
7. Console port  
8. USB port  
9. Contact Closure (CCA) port  
10. Ethernet WAN (ETH WAN) port  
11. ETH LAN ports  
12. DCP ports  
2. V2 — WAN Media Module Slot  
3. Analog port LEDs  
4. Analog trunks  
5. Analog line ports  
6. System LEDs  
13. DCP port LEDs  
Figure 4: The Avaya G250-DS1 Media Gateway Chassis  
2
1
6
11  
3
5
7
8
4
13  
14  
12  
10  
9
15  
16  
Figure notes:  
1. V1 — ICC/LSP Slot  
9. System LEDs  
10. Console port  
11. USB port  
12. Contact Closure (CCA) port  
13. Ethernet WAN (ETH WAN) port  
14. PoE LAN (ETH LAN PoE) ports  
15. Reset (RST) button  
2. V2 — WAN Media Module Slot  
3. Analog port LEDs  
4. Analog trunk  
5. Analog line ports  
6. T1/E1/PRI trunk interface LEDs  
7. T1/E1 interface  
8. Service  
16. Alternate Software Bank (ASB) button  
16 Overview for the Avaya G250 and Avaya G350 Media Gateways  
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G250 physical description  
For information about the different media modules that can be housed in the G250 media  
module slots, see Chapter 2: Optional components.  
Table 1: Fixed ports and buttons on the G250 front panel  
Port  
Description  
TRUNK  
Four analog trunk ports (G250-Analog Media  
Gateway, G250-DCP Media Gateway) or one  
analog trunk port (G250-BRI Media Gateway,  
G250-DS1 Media Gateway). These fixed trunk  
ports support loop-start, DIOD (for Japan only)  
trunks, and caller ID detection.  
LINE  
Two analog telephone ports. An analog relay  
provides Emergency Transfer Relay (ETR) feature.  
For the G250-Analog and G250-DCP, the relay is  
between TRUNK port 304 and LINE port 305. For  
the G250-BRI and G250-DS1, the relay is between  
TRUNK port 301 and LINE port 302. Also used for  
incoming analog DID trunks with either wink-start  
or immediate-start.  
ISDN BRI TRUNK  
(G250-BRI Media  
Gateway)  
Two 4 wire S/T ISDN BRI (Basic Rate Interface)  
2B+D access ports with RJ-45 jacks. Each port  
interfaces to the central office at the ISDN T  
reference point. The ISDN BRI trunk ports do not  
support:  
BRI stations  
Combining both B channels together to form  
a 128-kbps channel  
CONSOLE  
USB  
Console RS-232 interface port for direct  
connection of CLI console. RJ-45 connector.  
USB port. Supports the connection of  
USB flash drive  
USB externally powered hub  
The Multitech MultiModemUSB  
MT5634ZBA-USB-V92 USB modem  
CCA  
RJ-45 port for ACS (308) contact closure adjunct  
box.  
ETH WAN  
RJ-45 10/100 Base TX Ethernet port for  
connection to a cable or DSL broadband modem/  
router.  
1 of 2  
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Introduction  
Table 1: Fixed ports and buttons on the G250 front panel (continued)  
Port  
Description  
ETH LAN POE  
(G250-Analog, G250-BRI,  
and G250-DS1)  
Eight Power over Ethernet (PoE) LAN ports with  
80 watts (aggregated for all ports) for connecting  
IP phones or any Ethernet devices, such as PCs.  
RST  
ASB  
Reset button. Resets chassis configuration.  
Alternate Software Bank button. Reboots the G250  
with the software image in the alternate bank.  
DCP (G250-DCP)  
Twelve DCP ports. These DCP ports are intended  
for in-building use only.  
T1/E1 port (G250-DS1)  
For T1, this port is capable of supporting inband  
signalling across all 24 channels (supports a  
maximum bandwidth of 1.536 Mbps).  
For E1, this port is capable of supporting R2MFC  
signalling across all 30 channels (supports a  
maximum bandwidth of 1.92 Mbps).  
PRI port (G250-DS1)  
The PRI port is capable of supporting PRI  
signalling for 23 or 30 bearer channels. NFAS  
signalling is not supported.  
2 of 2  
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G350 physical description  
G350 physical description  
Figure 5: The Avaya G350 Media Gateway Chassis  
1
2
3
5
4
14  
15  
6
7
8
9
13  
17  
16  
12  
11  
10  
Figure notes:  
1. V6 — high-density media module slot  
2. V2 — standard media module slot  
3. V5 — standard media module slot  
4. V1 — slot for standard media module or S8300 Server  
5. V4 — standard media module slot  
6. V3 — standard media module slot  
7. Analog port LEDs  
9. Analog line ports  
10. CCA (Contact Closure) port  
11. ETH WAN port  
12. ETH LAN port  
13. System LEDs  
14. Console port  
15. USB port  
8. Analog trunk  
16. RST button  
17. ASB button  
For information about the different media modules that can be housed in the G350 media  
module slots, see Chapter 2: Optional components.  
Table 2: Fixed ports and buttons on the G350 front panel  
Port/Button  
Description  
TRUNK  
An analog trunk port. Part of an integrated analog  
media module. The fixed trunk port supports  
loop-start, ground-start, CAMA, and DIOD (for  
Japan only) trunks.  
LINE  
Two analog telephone ports of the integrated  
analog media module. An analog relay between  
TRUNK port 7/1 and the furthest left LINE port 7/2  
provides Emergency Transfer Relay (ETR) feature.  
Also used for incoming analog DID trunks.  
1 of 2  
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Introduction  
Table 2: Fixed ports and buttons on the G350 front panel (continued)  
Port/Button  
Description  
CCA  
RJ-45 port for ACS (308) contact closure adjunct  
box.  
ETH WAN  
ETH LAN  
CONSOLE  
RJ-45 10/100 Base TX Ethernet WAN port.  
RJ-45 10/100 Base TX Ethernet LAN port.  
Console port for direct connection of CLI console.  
RJ-45 connector.  
USB  
USB port. Supports the connection of:  
USB flash drive  
USB externally powered hub  
The Multitech MultiModemUSB  
MT5634ZBA-USB-V92 USB modem  
RST  
ASB  
Reset button. Resets chassis configuration.  
Alternate Software Bank button. Reboots the G350  
with the software image in the alternate bank.  
2 of 2  
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G350 physical description  
Figure 6: The G350 front panel ports and slots  
1
2
3
5
4
14  
15  
6
7
8
9
13  
17  
16  
12  
11  
10  
Figure notes:  
1. V6 — high-density media module slot  
2. V2 — standard media module slot  
3. V5 — standard media module slot  
4. V1 — slot for standard media module or S8300 server  
5. V4 — standard media module slot  
6. V3 — standard media module slot  
7. Analog port LEDs  
10. CCA (Contact Closure) port  
11. ETH WAN port  
12. ETH LAN port  
13. System LEDs  
14. Console port  
15. USB port  
16. RST button  
8. Analog trunk  
17. ASB button  
9. Analog line ports  
Table 3: Permitted slots for media modules  
Media  
Permitted slots  
Description  
module  
MM312  
MM314  
V6  
V6  
Provides 24 ports for connecting DCP telephones.  
Provides one copper Gigabit Ethernet port and 24  
10/100 Ethernet ports for connecting data devices.  
The 24 10/100 Ethernet ports can provide power to  
connected devices using Power over Ethernet  
(PoE).  
MM316  
MM340  
V6  
Provides one copper Gigabit Ethernet port and 40  
10/100 Ethernet ports for connecting data devices.  
The 40 10/100 Ethernet ports can provide power to  
connected devices using Power over Ethernet  
(PoE).  
V2, V3, V4, V5  
Provides one E1/T1 data WAN port for connecting  
to a WAN endpoint device.  
1 of 2  
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Introduction  
Table 3: Permitted slots for media modules (continued)  
Media  
Permitted slots  
Description  
module  
MM342  
V2, V3, V4, V5  
Provides one universal serial data WAN access port  
for connecting to a WAN endpoint device.  
MM710  
MM711  
MM712  
MM714  
MM716  
MM717  
V1, V2, V3, V4, V5  
V1, V2, V3, V4, V5  
V1, V2, V3, V4, V5  
V1, V2, V3, V4, V5  
V1, V2, V3, V4, V5  
V1, V2, V3, V4, V5  
Provides one E1/T1 trunk port for connecting an E1/  
T1 telephone trunk.  
Provides eight universal analog ports for connecting  
analog telephones or trunks.  
Provides eight ports for connecting DCP  
telephones.  
Provides four analog ports for analog telephones  
and four analog ports for analog trunks.  
Provides one amphenol connector that connects to  
a punch down block to provide 24 analog line ports.  
Provides one amphenol connector that connects to  
a punch down block to provide 24 ports for  
connecting DCP telephones.  
MM720  
V1, V2, V3, V4, V5  
Provides eight ports for connecting up to eight ISDN  
trunks or 16 ISDN BRI stations.  
MM722  
S8300  
V1, V2, V3, V4, V5  
V1  
Provides two ports for connecting ISDN trunks.  
Server  
2 of 2  
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Chapter 2: Optional components  
The Avaya G350 Media Gateway is a versatile device with powerful capabilities. To implement  
the various services that are supported, a variety of swappable internal components called  
media modules are available.  
Unlike the G350, the Avaya G250 Media Gateway LAN switching and voice ports are built into  
the G250’s chassis. However, the G250’s WAN and call controller options are modular, and  
accommodate the G350’s data WAN media modules, as well as the S8300 server.  
Supported media modules in the G350  
Table 4: Supported media modules  
Media module  
Description  
S8300  
CM server  
Telephony media modules  
MM711  
MM714  
MM716  
MM312  
MM712  
MM717  
MM710  
MM720  
MM722  
8 universal analog ports  
4 analog telephone ports and 4 analog trunk ports  
24 analog ports  
24 DCP telephone ports  
8 DCP telephone ports  
24 DCP telephone ports  
1 T1/E1 ISDN PRI trunk port  
8 ISDN BRI trunk or endpoint (telephone or data) ports  
2 ISDN BRI trunk ports  
WAN media modules  
MM340 1 E1/T1 data WAN port  
1 of 2  
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Optional components  
Table 4: Supported media modules (continued)  
Media module  
MM342  
Description  
1 universal serial data WAN port  
LAN media modules  
MM314  
MM316  
24 10/100 Ethernet ports with Power over Ethernet (PoE)  
and one Gigabit Ethernet copper uplink/access port.  
40 10/100 Ethernet ports with Power over Ethernet (PoE)  
and one 10/100/1000 Ethernet copper uplink/access  
port.  
2 of 2  
!
CAUTION:  
CAUTION:  
The MM316, MM340, and MM342 are not supported by the Avaya G700 Media  
Gateway. Do not insert an MM316, MM340, or MM342 media module into an  
Avaya G700 Media Gateway.  
S8300 server  
The S8300 server is a Pentium-based processor that runs a Linux operating system. The  
S8300 runs Avaya Communication Manager (CM) to provide call control services to the G350.  
The G350 is compatible with Avaya CM from version 2.1 onwards and backwards compatible  
with Avaya CM 2.0.  
The S8300 server features:  
Avaya Native Configuration Manager. An administration tool that provides terminal  
emulation capabilities and a variety of connectivity options you can save and reuse.  
A 30GB hard disk  
512 MB RAM  
A WEB server used for the following:  
- Backups and restores for customer data  
- Easy access to view current alarms  
- The ability to perform server maintenance, shutdown, and status of the S8300 server  
- Security commands that can enable and disable the modem, start and stop the FTP  
server, and view the software license  
- SNMP access to configure trap destinations and stop and start the master agent  
- S8300 server configuration information and upgrade access  
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Supported media modules in the G350  
- The ability to download the Avaya Native Configuration Manager from the S8300  
server to a PC on the LAN  
Linux operating system (Redhat v8.x)  
Interface for IA770 INTUITY AUDIX Messaging, a software-only version of INTUITY  
AUDIX messaging that resides on the hard drive of the S8300 server. For more  
information, see the description of the S8300 server in the Hardware Description and  
Reference for Avaya Communication Manager, 555-245-207.  
Trivial File Transfer Protocol (TFTP) server  
Security/firewall configuration  
H.248 Media Gateway Signaling Protocol  
Control messages tunneled over H.323 Signaling Protocol  
One 10/100Base-T Ethernet switch port used as a Services port  
Two USB ports for modem connections  
SNMP alarming  
Support for remote call out alarming  
Figure 7: The S8300 server  
Telephony media modules  
The G350 supports the MM711, MM714, and MM716 analog media modules, the MM312,  
MM712, and MM717 DCP media modules, the MM710 E1/T1 media module, and the MM720  
and MM722 BRI media modules.  
MM711 analog media module  
The MM711 provides analog trunk and telephone features and functionality.  
Configuring MM711 ports  
The administrator can configure any of the eight ports of the MM711 as follows:  
Central office trunk, either loop start or ground start  
Analog Direct Inward Dialing (DID) trunks, either wink-start or immediate-start  
2-wire analog Outgoing CAMA E911 trunks for connectivity to the PSTN  
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Optional components  
MF signaling is supported for CAMA ports  
Analog, tip/ring devices, such as single-line telephones with or without LED message  
waiting indication  
MM711 also supports  
Three ringer loads (ringer equivalency number) for up to 2,000 feet (610 meters) for all  
eight ports  
Up to eight simultaneously-ringing ports  
Note:  
Note:  
The media gateway achieves this number of ports by staggering the ringing and  
pauses between two sets of up to four ports.  
Type 1 Caller ID  
Ring voltage generation for a variety of international frequencies and cadences  
Figure 8: The MM711 media module  
MM714 analog media module  
The MM714 analog media module provides four analog telephone ports and four analog trunk  
ports.  
Note:  
Note:  
The four analog trunk ports cannot be used for analog DID trunks. Instead, the  
four analog telephone ports must be used.  
Configuring MM714 ports  
The MM714 provides you with the capability to configure any of the four trunk ports as:  
A loop start or a ground start central office trunk with a loop current of 18 to 120 mA  
A two-wire analog Outgoing CAMA E911 trunk, for connectivity to the PSTN. MF signaling  
is supported for CAMA ports.  
Configuring MM714 line ports  
The MM714 provides you with the capability to configure any of the four telephone ports as:  
A wink-start or an immediate-start DID trunk  
26 Overview for the Avaya G250 and Avaya G350 Media Gateways  
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Supported media modules in the G350  
Analog tip/ring devices such as single-line telephones with or without LED message  
waiting indication  
MM714 also supports  
Three ringer loads, which is the ringer equivalency number for up to 2,000 feet (610  
meters) for all eight ports  
Up to four simultaneously-ringing ports  
Type 1 caller ID and Type 2 caller ID  
Ring voltage generation for a variety of international frequencies and cadences  
Figure 9: The MM714 media module  
MM716 analog media module  
The MM716 provides 24 analog ports supporting telephones, modem, and fax. These ports can  
also be configured as DID trunks with either wink-start or immediate-start. The 24 ports are  
provided via a 25 pair RJ21X amphenol connector, which can be connected by an amphenol  
cable to a breakout box or punch-down block.  
Configuring MM716 ports  
The MM716 provides you with the capability to configure any of the 24 ports as:  
Analog tip/ring devices such as single-line telephones with or without LED message  
waiting indication  
A wink-start or an immediate-start DID trunk  
MM716 also supports  
Three ringer loads, which is the ringer equivalency number for up to 2,000 feet (610  
meters) for all 24 ports  
Up to 24 simultaneously-ringing ports  
Type 1 caller ID  
Ring voltage generation for a variety of international frequencies and cadences  
The MM716 is compatible with Avaya Communication Manager release 3.1 and higher, and  
branch gateway firmware version 25.0.0 and higher.  
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Optional components  
Figure 10: The MM716 media module  
MM312 DCP media module  
The MM312 DCP media module provides 24 Digital Communications Protocol (DCP) ports with  
RJ-45 jacks. The MM312 supports simultaneous operation of all 24 ports. Each port can be  
connected to a two-wire DCP telephone. See Appendix B: Supported Avaya telephones for a  
list of compatible DCP telephones.  
Note:  
Note:  
The MM312 does not support four-wire DCP telephones.  
Figure 11: The MM312 media module  
MM712 DCP media module  
The MM712 DCP media module provides eight DCP telephone ports. The ports support  
two-wire Digital Communications Protocol (DCP) telephones. See Appendix B: Supported  
Avaya telephones for a list of compatible DCP telephones.  
Figure 12: The MM712 media module  
MM717 DCP media module  
The MM717 DCP media module provides 24 DCP ports of two-wire DCP functionality exposed  
as a single 25-pair amphenol connector. The DCP ports are exposed by connecting the module  
via a standard amphenol cable to a punch-down block with RJ-11 jacks. The MM717 allows you  
to use one of the smaller media module slots for a large number of DCP telephones.  
28 Overview for the Avaya G250 and Avaya G350 Media Gateways  
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Supported media modules in the G350  
Figure 13: The MM717 media module  
MM710 E1/T1 media module  
The MM710 E1/T1 media module terminates an E1 or T1 trunk. The MM710 has a built-in  
Channel Service Unit (CSU) so an external CSU is not necessary. The CSU is only used for the  
T1 circuit.  
The MM710 features:  
ISDN PRI capability (23B+D or 30B+D)  
Trunk signaling to support US and International CO or tie trunks  
Echo cancellation in either direction  
Figure 14: The MM710 media module  
MM720 BRI media module  
The MM720 BRI media module provides eight ports with RJ-45 jacks that can be administered  
either as BRI trunk connections or BRI endpoint (telephone and data module) connections.  
Note:  
Note:  
The MM720 BRI media module cannot be administered to support both BRI  
trunks and BRI endpoints at the same time. However, the MM720 BRI Media  
Module supports combining both B-channels together to form a 128-kbps  
channel. CM 3.1 enables combining B-channels, using BONDing, to form a  
higher bandwidth connection.  
Finally, if the MM720 BRI Media Module is administered to support BRI  
endpoints, it cannot be used as a clock synchronization source.  
For BRI trunking, the MM720 BRI media module supports up to eight BRI interfaces to the  
central office at the ISDN TE reference point. Information is communicated in two ways:  
Over two 64-kbps channels, called B1 and B2, that can be circuit-switched simultaneously  
Over a 16-kbps channel, called the D-channel, that is used for signaling. The MM720  
occupies one time slot for all eight D channels.  
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Optional components  
The circuit-switched connections have an A- or Mu-law option for voice operation. The  
circuit-switched connections operate as 64-kbps clear channels when in the data mode.  
For BRI endpoints, the MM720 BRI media module supports up to 16 BRI stations and data  
modules that conform to AT&T BRI, World Class BRI, and National ISDN NI1/NI2 BRI standards.  
The MM720 BRI media module provides -40 volt phantom power to the BRI endpoints.  
Figure 15: The MM720 media module  
MM722 BRI media module  
The MM722 BRI media module provides two 4 wire S/T ISDN BRI 2B+D access ports with  
RJ-45 jacks. Each port interfaces to the central office at the ISDN T reference point. Information  
is communicated in the same manner as for the MM720. See MM720 BRI media module on  
Figure 16: The MM722 media module  
Note:  
Note:  
The MM722 media module does not support BRI stations or combining both B  
channels together to form a 128-kbps channel.  
30 Overview for the Avaya G250 and Avaya G350 Media Gateways  
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Supported media modules in the G350  
WAN media modules  
The G350 supports the MM340 E1/T1 WAN and MM342 Universal Serial Port WAN media  
modules.  
MM340 E1/T1 WAN media module  
The MM340 E1/T1 WAN media module provides a data WAN access port for the connection of  
an E1 or T1 WAN.  
Figure 17: The MM340 media module  
MM342 universal serial data WAN media module  
The MM342 media module provides one universal serial data WAN access port. MM342  
supports the following WAN protocols:  
V.35/ RS449  
X.21  
Necessary cable  
For these connections, one of the following cables is necessary:  
Avaya Serial Cable DTE V.35 (Universal Serial Port to V.35)  
Avaya Serial Cable DTE X.21 (Universal Serial Port to X.21)  
Figure 18: The MM342 media module  
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Optional components  
LAN media modules  
The G350 supports the MM314 and MM316 LAN media modules.  
MM314 LAN media module  
The MM314 LAN media module provides:  
24 Ethernet 10/100 Base-T Ethernet access ports with inline Power over Ethernet (PoE)  
One Gigabit Ethernet copper port for server connection or uplink to another switch or  
router  
The MM314 supports 48V DC inline power provided over standard category 5 UTP cables (up  
to 100m range) on each PoE port.  
Power consumption for the MM314 media module is 335W.  
MM314 features  
Priority power budgeting with configurable priorities  
Automatic load detection on ports  
Automatic device discovery  
Enable/disable port powering option  
Port monitoring  
Automatic recovery from overload shutdown  
Automatic recovery from no-load shutdown  
Figure 19: The MM314 media module  
Versions of the MM314 LAN media module with Material Code 700384 (C/S:2.0) require Avaya  
CM version 2.0 and higher, and G350 firmware version 25.0.0 and higher.  
For more information about PoE, see Power over Ethernet (PoE) on page 46.  
32 Overview for the Avaya G250 and Avaya G350 Media Gateways  
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Supported media modules in the G350  
MM316 LAN media module  
The MM316 LAN media module provides:  
40 Ethernet 10/100 Base-T Ethernet access ports with inline Power over Ethernet (PoE)  
One Gigabit Ethernet copper port for server connection or uplink to another switch or  
router  
The MM316 supports 48V DC inline power provided over standard category 5 UTP cables (up  
to 100m range) on each PoE port.  
Power consumption for the MM316 media module is 435W.  
MM316 features  
Priority power budgeting with configurable priorities  
Automatic load detection on ports  
Automatic device discovery  
Enable/disable port powering option  
Port monitoring  
Automatic recovery from overload shutdown  
Automatic recovery from no-load shutdown  
Figure 20: The MM316 media module  
The MM316 is compatible with Avaya CM version 2.0 and higher, and G350 firmware version  
25.0.0 and higher.  
For more information about PoE, see Power over Ethernet (PoE) on page 46.  
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Optional components  
Media module slot configurations in the G350  
When choosing a combination of media modules to install in the G350 chassis, consider the  
slots in which each module type can be housed, and the limitations and recommendations  
regarding combinations of media modules.  
Permitted slots  
The G350 chassis has six media module slots, marked V1, V2, V3, V4, V5, V6 (see G350  
physical description on page 19). Each media module is restricted to certain slots.  
Table 5: Permitted slots for media modules  
Media module Permitted slots  
MM312  
MM314  
MM316  
MM340  
MM342  
MM710  
MM711  
MM712  
MM714  
MM716  
MM717  
MM720  
MM722  
S8300  
V6  
V6  
V6  
V2, V3, V4, V5  
V2, V3, V4, V5  
Any media module slot, V1-V5  
Any media module slot, V1-V5  
Any media module slot, V1-V5  
Any media module slot, V1-V5  
Any media module slot, V1-V5  
Any media module slot, V1-V5  
Any media module slot, V1-V5  
Any media module slot, V1-V5  
V1  
34 Overview for the Avaya G250 and Avaya G350 Media Gateways  
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Supported media modules in the G250  
Combination limitations in the G350  
The following limitations apply to stations and trunks in the G350:  
Up to a total of 72 stations (any mix of analog, DCP, IP)  
Up to a total of 60 trunks, subject to the following restrictions:  
- up to 2 E1 (T1) trunks  
- up to 40 analog trunks  
- up to 32 IP trunks at G711  
Up to a total of 132 TDM stations and trunks  
The following limitations apply to combining media modules in the G350:  
No more than two of the following media modules: MM340 and MM710  
No more than three of the following media modules: MM716 and MM717  
Supported media modules in the G250  
The G250 supports the following Avaya media modules:  
Table 6: Supported media modules  
Media module  
Description  
S8300  
CM server  
WAN media modules  
MM340  
MM342  
1 E1/T1 data WAN port  
1 universal serial data WAN access port  
!
CAUTION:  
CAUTION:  
The MM340 and MM342 media modules are not supported by the Avaya G700  
Media Gateway. Do not insert an MM340 or MM342 media module into an Avaya  
G700 Media Gateway.  
For information about the WAN media modules, see WAN media modules on page 31. For  
information about the S8300 server, see S8300 server on page 24.  
The S8300 server can be inserted in slot V1. A WAN media module can be inserted in slot V2.  
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Optional components  
36 Overview for the Avaya G250 and Avaya G350 Media Gateways  
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Chapter 3: Summary of services  
The Branch Gateway (G250 or G350) offers various services, which are described in Media  
Media gateway services  
The Avaya G250 and Avaya G350 Media Gateways provide a telephone exchange service,  
supporting the connection of various types of telephones and outside telephone lines.  
Telephones and lines are connected to the G250/G350 via ports and media modules on the  
chassis. Different media modules provide access ports for different types of telephones and  
lines.  
Telephony services are controlled by a media gateway controller (MGC) running Avaya  
Communication Manager (CM) call processing software. You can use the Avaya CM to  
configure many advanced telephone exchange functions. For more information, see the  
Administrator’s Guide for Avaya Communication Manager, 555-233-506.  
This section describes the services the G250/G350 provides as a media gateway. All services  
are supported by both the G250 and the G350 except where otherwise specified.  
Voice over IP (VoIP)  
The Avaya G250 and Avaya G350 Media Gateways feature a VoIP engine that provides voice  
services over IP data networks. The G250/G350 allows you to use many types of telephones  
and trunks that do not directly support VoIP. The G250/G350 translates voice and signalling  
data between VoIP and the system used by the telephones and trunks, as follows: Avaya media  
modules convert the voice path of traditional circuits such as analog trunk, T1/E1, and DCP to a  
TDM bus inside the G250/G350. The VoIP engine then converts the voice path from the TDM  
bus to a compressed or uncompressed and packetized VoIP on an Ethernet connection.  
Both the G250 and the G350 provide VoIP services over the LAN and WAN. The G350 supports  
the G.711 codec for up to 32 concurrent calls and the G.729 codec for up to 16 concurrent calls.  
The G250-Analog and G250-BRI support both the G.711 and the G.729 codec, for a total of 10  
concurrent calls. The G250-DCP and G250-DS1 support both the G.711 and the G.729 codec,  
for a total of 16 concurrent calls.  
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Summary of services  
Physical media — G350  
There are various types of telephones and lines supported by the G350 and access ports  
provided for their connection.  
Telephones  
The G350 supports IP telephones, Avaya DCP telephones, analog telephones, and BRI  
telephones. For information about which Avaya telephones are supported, see  
Telephones must be connected to the correct type of port for the telephone type. Different types  
of telephone ports are provided by different media modules and by fixed ports on the G350 front  
panel. The table below lists which ports you can use to connect each type of telephone. See  
Chapter 2: Optional components for more information about each type of port and media  
module.  
Table 7: Telephones supported and ports provided  
Telephone type  
Ports  
IP telephones  
Switched Ethernet ports on the MM314 and MM316 LAN media  
modules.  
Note:  
Note:  
The registration and signaling control information  
is under the direct control of the S8xxx server.  
Avaya DCP digital DCP ports on the MM312, MM712, and MM717 media modules.  
telephones  
Analog telephones Analog line ports on the MM711, MM714, and MM716  
analog media modules.  
Fixed analog telephone line port, LINE (see G350 physical  
Voice software  
The G350 supports telephone calls between a computer on the network running Avaya  
Softphone software and analog telephones connected to the G350.  
38 Overview for the Avaya G250 and Avaya G350 Media Gateways  
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Media gateway services  
Outside telephone lines  
The table below lists which modules you can use to connect each type of outside line. See  
Chapter 2: Optional components for more information about each type of port and media  
module.  
Table 8: Outside telephone lines supported and ports provided  
Line Type  
Ports  
ISDN line  
ISDN ports on the MM720 and MM722 BRI media modules.  
Analog trunk ports on the MM714 analog media module.  
Analog trunks  
Fixed analog trunk port, TRUNK (see G350 physical  
Universal analog ports on MM711.  
DID trunk ports with wink-start and immediate-start only on  
MM716.  
T1/E1 voice lines  
The T1/E1 port on the MM710 T1/E1 media module.  
Physical media — G250  
There are various types of telephones and lines supported by the G250 and access ports  
provided for their connection.  
Telephones  
The G250 supports IP telephones and analog telephones. The G250-DCP also supports Avaya  
DCP telephones. For information about which Avaya telephones are supported, see  
Telephones must be connected to the correct type of port for the telephone type. Different types  
of telephone ports are provided by fixed ports on the G250 front panel. The table below lists  
which ports you can use to connect each type of telephone. See G250 physical description on  
page 15 for more information about each type of port.  
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Summary of services  
Table 9: Telephones supported and ports provided  
Telephone type  
Ports  
IP telephones  
LAN ports on the G250 front panel. For PoE functionality,  
use an ETH LAN PoE port.  
Analog telephones  
DCP telephones  
LINE or ANALOG LINE ports on the G250 front panel.  
DCP ports on the G250-DCP front panel.  
Voice software  
The G250 supports telephone calls between a computer on the network running Avaya  
Softphone software and analog/DCP telephones connected to the G250.  
Outside telephone lines  
The table below lists which ports you can use to connect each type of outside line. See G250  
Table 10: Outside telephone lines supported and ports provided  
Line Type  
Ports  
ISDN lines  
G250-BRI only — ISDN BRI TRUNK ports on the  
G250-BRI front panel.  
Analog trunks  
Analog TRUNK ports on the G250 front panel.  
T1/E1 port on the G250-DS1 front panel.  
T1/E1 voice lines  
Media Gateway Controllers  
A Media Gateway Controller (MGC) controls telephone services on a media gateway. An MGC  
may be internal to the media gateway or external to the media gateway. An Internal Call  
Controller (ICC) is an internal MGC. An External Call Controller (ECC) is an external MGC that  
communicates with the G250/G350 over the network.  
An Avaya S8XXX server managed with Avaya Communication Manager (CM) software acts as  
an MGC for the Avaya G250 or Avaya G350 Media Gateway.  
40 Overview for the Avaya G250 and Avaya G350 Media Gateways  
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Media gateway services  
Supported S8XXX servers  
The MGCs supported by the Avaya G250 or Avaya G350 Media Gateway include both ECCs  
and ICCs. Both the G250 and the G350 support the following MGCs:  
Table 11: MGCs supported by the Avaya G250 and Avaya G350 Media Gateways  
MGCs  
Type  
Usage  
Avaya S8300 Server  
Avaya S8400 Server  
Avaya S8500 Server  
Avaya S8700 Server  
Avaya S8710 Server  
Avaya S8720 Server  
Avaya S8730 Server  
Media module  
External  
ICC, ECC or LSP  
ECC  
External  
ECC or LSP  
ECC  
External  
External  
ECC  
External  
ECC  
External  
ECC  
Note:  
Note:  
The S8700 Server cannot be upgraded to CM 5.0.  
See Chapter 2: Optional components for information about the S8300 Server module.  
Configuring G250/G350 options  
The G250/G350 provides the following configuration options to help you ensure continuous  
telephone services:  
You can configure the G250/G350 to use up to four MGCs. If the MGC is an S8700,  
S8710, S8720, or S8730, the first server on the list will normally be the primary C-LAN  
board connected to the S8xxx server. If the MGC is an S8400 or S8500, the first server on  
the list will be either the primary C-LAN board connected to the S8xxx server or an  
Ethernet port on the server that has been enabled for processor Ethernet connections. If  
the MGC is an S8300, the first server on the list will be the IP address of the S8300. The  
remaining servers will be alternate C-LAN boards connected to the S8xxx server (S8400,  
S8500, or S8700-series servers), an S8300 configured as an LSP, or the port enabled as  
the Ethernet processor port on an S8500 configured as an LSP.  
Using the connection preserving migration feature, you can configure the G250/G350 to  
preserve the bearer paths of stable calls in the event that the G250/G350 migrates to  
another MGC (including an LSP), including migration back from an LSP to the primary  
MGC. A call for which the talk path between parties in the call has been established is  
considered stable. A call consisting of a user listening to announcements or music is not  
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Summary of services  
considered stable and is not preserved. Any change of state in the call prevents the call  
from being preserved. For example, putting a call on hold during MGC migration will cause  
the call to be dropped. Special features, such as conference and transfer, are not available  
on preserved calls. Connection preserving migration preserves all types of bearer  
connects except BRI. PRI trunk connections are preserved.  
You can configure Standard Local Survivability (SLS) to enable a local G250/G350 to  
provide a degree of MGC functionality when no link is available to an external MGC. SLS  
is configured on a system-wide basis using the Provisioning and Installation Manager  
(PIM). Alternatively, SLS can be configured from the individual G250/G350 itself using the  
CLI. SLS is supported as follows in the various Branch Gateway models:  
- G350 with C/S (hardware vintage) 3.0 and up: SLS supported for all analog interfaces,  
ISDN BRI/PRI trunk interfaces, non-ISDN digital DS1 trunk interfaces, IP phones, IP  
Softphone, and DCP phones.  
- G250-Analog: SLS supported for all analog interfaces, IP phones, and IP Softphone.  
- G250-BRI: SLS supported for all analog interfaces, ISDN BRI trunk interfaces, IP  
phones, and IP Softphone.  
- G250-DCP: SLS supported for all analog and DCP interfaces, IP phones, IP  
Softphone, and DCP phone.  
- G250-DS1: SLS supported for all analog interfaces, ISDN PRI trunk interfaces,  
non-ISDN digital DS1 trunk interfaces, IP phones, and IP Softphone.  
You can configure Enhanced Local Survivability (ELS) by installing an S8300 in the G250/  
G350 as a Local Survivable Processor (LSP). In this configuration, the S8300 is not the  
primary MGC but takes over to provide continuous telephone service if all external MGCs  
become unavailable. Calls in progress continue without interruption when the S8300 takes  
over.  
You can configure the dialer interface to connect to the G250/G350’s primary MGC via a  
serial modem in the event that the connection between the G250/G350 and the MGC is  
lost.  
You can configure the Avaya CM to support the auto fallback feature, which enables a  
G250/G350 being serviced by an LSP to return to its primary MGC automatically when the  
connection is restored between the G250/G350 and the MGC. When the G250/G350 is  
being served by its LSP, it automatically attempts to register with its MGC at periodic  
intervals. The MGC can deny registration in cases in which it is overwhelmed with call  
processing, or in other configurable circumstances. By migrating the G250/G350 to the  
MGC automatically, a fragmented network can be unified more quickly, without the need  
for human intervention.  
Note:  
Note:  
Auto fallback does not include survivability. Therefore, there is a short period  
during registration with the MGC during which calls are dropped and service is  
not available. This problem can be minimized using the connection preserving  
migration feature.  
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Media gateway services  
The G250/G350 features a dynamic trap manager, which enables you to ensure that the  
G250/G350 sends traps directly to the currently active MGC. If the MGC fails, the dynamic  
trap manager ensures that traps are sent to the backup MGC.  
MGC management  
The MGC is managed by the Avaya Communication Manager (CM). The G250/G350 supports  
Avaya Communication Manager (CM) release 5.0 and is backwards compatible with release 2.0  
and above.  
Avaya CM features  
Avaya CM is an open, scalable, highly reliable, and secure telephony application. Avaya CM  
provides user and system management functionality, intelligent call routing, application  
integration and extensibility, and enterprise communications networking. Avaya CM offers over  
500 features, in the following categories:  
Telephony features  
Localization  
Collaboration  
Mobility  
Messaging  
Telecommuting  
System management  
Reliability  
Security, privacy, and safety  
Hospitality  
Attendant features  
Networking  
Intelligent call routing  
Application programming interfaces  
Avaya CM software applications  
Determine where to connect your telephone call based on the number you dial  
Assign numbers to local telephones  
Play dial tones, busy signals, and prerecorded voice announcements  
Allow or prohibit access to outside lines for specific telephones  
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Summary of services  
Assign telephone numbers and buttons to special features  
Exchange call switching information with older telephone switches that do not support  
VoIP  
For more information about Avaya CM software, see Administrator’s Guide for Avaya  
Communication Manager, 555-233-506.  
Additional features  
The G250/G350 also provides voice-related features.  
Call center capabilities  
The G350 supports call center features according to the mode of deployment (see G350  
Distributed Avaya Enterprise Connect mode. The G350 supports up to ten concurrent call  
center agents. This configuration is supported by CM 2.0 applications and above.  
Standalone mode. The G350 supports a call center application with up to ten concurrent  
agents. This application is supported by CM 2.1 and above.  
Note:  
Note:  
The G250 does not support call center features.  
Emergency Transfer Relay (ETR)  
The Emergency Transfer Relay (ETR) feature provides basic telephone services in the event of  
a power outage or a failed connection to Avaya Communication Manager. Using ETR, you can  
connect:  
In the G350, the fixed analog trunk port (TRUNK - V701) to the first analog line port  
(LINE - V702)  
In the G250-Analog, the fourth fixed analog trunk port (TRUNK - V304) to the first line port  
(LINE - V305)  
In the G250-BRI, the fixed analog trunk port (TRUNK - V301) to the first analog line port  
(LINE - V302)  
In the G250-DCP, the fourth fixed analog trunk port (TRUNK - V304) to the first line port  
(LINE - V305)  
In the G250-DS1, the fixed analog trunk port (TRUNK - V301) to the first line port  
(LINE - V302)  
44 Overview for the Avaya G250 and Avaya G350 Media Gateways  
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LAN services  
!
WARNING:  
WARNING:  
Do not enable ETR on ports used for DID.  
An outside telephone exchange can be connected to the trunk port, and an analog telephone  
can be connected to the line port. All calls are then directed by the analog relay between the  
outside line and the analog telephone. A current-loop detection circuit prevents ongoing calls  
from being disconnected when normal functioning resumes. It is recommended that ETR not be  
enabled for line ports that are administered for use with analog DID trunks.  
Contact closure  
The contact closure feature is a controllable relay providing dry contacts for various  
applications. To implement the contact closure feature, connect an Avaya Partner Contact  
Closure Adjunct box to the CCA port on the G250/G350 chassis. The adjunct box provides two  
contact closures that can be operated in either a “normally closed” or “normally open” state. The  
contact closures can control devices such as devices that automatically lock or unlock doors or  
voice recording units. The CCA port can be configured so that the connected devices can be  
controlled by an end device, such as a telephone. For example, a user can unlock a door by  
keying a sequence into a telephone keypad.  
Fax, modem, TTY over IP  
The G250/G350 supports fax, modem, and TTY over IP.  
LAN services  
You can use both the Avaya G250 and Avaya G350 Media Gateways as a LAN switch. You can  
also integrate the G250/G350 into an existing LAN.  
Physical media  
The G350 provides LAN services through the following Ethernet ports for the connection of local  
data devices:  
Switched LAN ports. Configurable switched Ethernet ports on the MM314 media module  
(see MM314 LAN media module on page 32) and the MM316 media module (see MM316  
LAN media module on page 33). The switched Ethernet ports support HP auto-MDIX,  
which automatically detects and corrects the polarity of crossed cables. This results in  
simplified LAN installation and maintenance.  
Issue 5 June 2008 45  
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Summary of services  
Fixed LAN port. The fixed LAN port on the chassis, connected to the internal LAN switch.  
The fixed LAN port supports HP auto-MDIX, which automatically detects and corrects the  
polarity of crossed cables. This results in simplified LAN installation and maintenance.  
The G250 provides LAN services through eight fixed ETH LAN PoE ports on the chassis.  
Note:  
Note:  
The G250-DCP only has two fixed ETH LAN ports. These ports do not support PoE.  
Power over Ethernet (PoE)  
In the G350, the MM314 and MM316 media modules’ ports provide power to data devices over  
the Ethernet connection (PoE). The ports support the connection of IP phones and wireless  
access points, which you may want to power through the G350.  
In the G250, PoE service is provided by eight fixed ETH LAN PoE ports on the chassis.  
Note:  
Note:  
The G250-DCP does not provide PoE service.  
The inline PoE feature enables you to power data devices through the G250/G350. Power is  
distributed between the PoE ports, according to configured priorities. You configure the power  
priority on each port. Distribution is calculated from the actual power consumption.  
An automatic discovery system detects when powered devices are connected to and removed  
from the PoE ports. Automatic load detection:  
Tests whether the device connected to the port requires remote powering  
Controls the power injection to the wires  
VLANs  
In the G350, you can configure VLANs on the fixed LAN port and on the MM314 and MM316  
ports. In the G250, you can configure VLANs on all Ethernet ports except the WAN ETH port.  
Both the G250 and the G350 support up to eight VLANs. The following VLAN features are  
supported:  
VLAN port grouping. Port VLANs can be used to group LAN ports into logical groups.  
Ingress VLAN Security. You configure a list of ingress VLANs on each port. Any packets  
tagged with an unlisted VLAN are dropped when received on the port.  
Class of Service (CoS) tagging. Packets are tagged with VLANs per CoS.  
Inter-VLAN routing. You can configure specific VLANs to permit access to the WAN while  
others can be configured to deny access to the WAN.  
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WAN services  
Rapid Spanning Tree Protocol (RSTP)  
The IEEE 802.1D (STP) and IEEE 802.1w (RSTP) Spanning Tree Protocols are supported on  
the MM314 and MM316 switched LAN ports.  
Note:  
Note:  
STP is not supported in the G250.  
Port mirroring  
Both the G250 and the G350 support network traffic monitoring by port mirroring. You can  
configure port mirroring on any LAN port. You implement port mirroring by connecting an  
external traffic probe device to one of the LAN ports. The probe device monitors traffic that is  
sent and received through other ports by copying the packets and sending them to the monitor  
port.  
Note:  
Note:  
You cannot configure port mirroring on the G350 fixed LAN port or the G250/  
G350 WAN Fast Ethernet ports.  
Port redundancy  
You can configure port redundancy on the G350. Port redundancy allows you to provide both a  
primary link and a backup link to an important resource.Port redundancy is supported between  
any two PoE ports on the MM314 or the MM316 media modules.  
WAN services  
The G250/G350 has an internal router and provides direct access to outside WAN lines. You  
can use the G250/G350 as the endpoint device for a WAN line. You can also use the G250/  
G350 as the router for a WAN line with an external endpoint device.  
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Summary of services  
Physical media  
To use the G250/G350 as the endpoint device for a WAN, install a WAN media module and  
connect the WAN line to a port on the media module. When you connect a WAN line to a media  
module, the G250/G350 serves as the router for the WAN line.  
You can also use the fixed ETH WAN Fast Ethernet port as a WAN endpoint by configuring the  
port’s interface for PPPoE encapsulation (ADSL modem) or Ethernet-DHCP/static IP (cable  
modem).  
To use the G250/G350 as a router, connect the external endpoint device to the fixed WAN port  
on the G250/G350 front panel using a standard network cable. See G250 physical  
port on the G250 and G350 front panels.  
You can also use the fixed WAN port to connect a computer or other endpoint data device to the  
G250/G350.  
Avaya G250 and G350 support  
The G250/G350 supports the following types of data WAN line:  
E1/T1  
Universal Serial Port  
PPPoE (ADSL modem)  
Ethernet-DHCP/static IP (cable modem)  
Media modules necessary for each WAN line  
The table below lists which media modules to install to connect each type of outside WAN line.  
For more information about each type of media module, see Chapter 2: Optional components.  
Table 12: Outside WAN lines supported and matching media modules  
WAN line  
Media modules  
Universal Serial Port  
E1/T1 data lines  
MM342  
MM340  
Chassis  
Chassis  
PPPoE (ADSL modem)  
Ethernet (DHCP/static IP)  
(cable modem)  
48 Overview for the Avaya G250 and Avaya G350 Media Gateways  
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WAN services  
WAN features  
The G350 supports the following WAN features. The G250 also supports these features, except  
where otherwise noted.  
Traffic shaping. The traffic shaping function estimates the parameters of the incoming  
traffic and takes action if it measures traffic exceeding agreed parameters. The action  
could be to drop the packets or mark them as being high drop priority.  
PPP over channeled and fractional E1/T1. The G250/G350 has the ability to map several  
PPP sessions to a single E1/T1 interface.  
Note:  
Note:  
The G250 only supports fractional E1/T1.  
PPP over Universal Serial Port  
PPPoE  
Unframed E1 for enabling full 2.048 Mbps bandwidth usage  
Point-to-Point Frame Relay encapsulation over channelized/fractional/unframed E1/T1  
ports or over a Universal Serial Port interface  
Frame Relay LMI types supported: ANSI (Annex D), ITU-T:Q-933 (Annex A0), LMI-Rev1,  
and No LMI  
Backup functionality supported between any type of Serial Layer 2 interface  
Dynamic Call Admission Control (CAC) for Fast Ethernet, Serial, and GRE tunnel  
interfaces. Dynamic CAC provides enhanced control over WAN bandwidth. When  
Dynamic CAC is enabled on an interface, the G250/G350 informs the MGC of the actual  
bandwidth of the interface and tells the MGC to block calls when the bandwidth is  
exhausted.  
Quality of Service (QoS). The G250/G350 uses Weighted Fair VoIP Queuing (WFVQ) as  
the default queuing mode for WAN interfaces. WFVQ combines weighted fair queuing  
(WFQ) for data streams and priority VoIP queuing to provide the real-time response time  
that is required for VoIP. The G250/G350 also supports the VoIP Queue and Priority  
Queue legacy queuing methods.  
Weighted Random Early Detection (WRED). The G250/G350 uses WRED on its ingress  
and egress queues to improve the performance of the network when overloaded. The  
purpose of WRED is to indicate to transmitting hosts to reduce their transmission speed  
when the ingress G350 queues are congested.  
Policy. Each interface on the G250/G350 can have four active policy lists:  
- Ingress Access Control List  
- Ingress QoS List  
- Egress Access Control List  
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Summary of services  
- Egress QoS List  
Access control lists define which packets should be forwarded or denied access to the  
network. QoS lists change the DSCP and 802.1p priority of routed packets according to  
the packet characteristics.  
Policy-based routing. The G250/G350 features policy-based routing, which uses a policy  
list structure to implement a routing scheme based on traffic source, destination, type, and  
other characteristics. You can use policy-based routing lists (PBR lists) to determine the  
routing of packets that match the rules defined in the list. Common applications include  
separate routing for voice and data traffic, routing traffic originating from different sets of  
users through different Internet connections (Internet Service Providers), and defining  
backup routes for defined classes of traffic.  
RTP Header Compression. The G250/G350 saves up to 60% of the bandwidth necessary  
using RTP compression. It also enhances the efficiency of voice transmission over the  
network by compressing the headers of Real Time Protocol (RTP) packets, thereby  
minimizing the overhead and the delays involved in RTP implementation.  
TCP Header Compression. The G250/G350 uses Transmission Control Protocol (TCP)  
header compression to reduce the amount of bandwidth needed for non-voice data. TCP  
header compression can be applied either as part of RTP Header Compression via IPCH,  
or using the Van Jacobson method defined in RFC 1144.  
Inter-Gateway Alternate Routing (IGAR). The G250/G350 uses IGAR as a means to use  
the PSTN as an alternative to the WAN interface under certain definable conditions. In  
providing an alternate routing mechanism, IGAR preserves the internal makeup of the call  
so that the call can be successfully terminated to its original internal destination.  
Routing features  
Both the G250 and the G350 have an internal router. You can configure the following routing  
features on the router:  
Interfaces  
Routing table  
VPN  
GRE tunneling  
DHCP and BOOTP relay  
DHCP server  
DHCP client  
Broadcast relay  
ARP table  
ICMP errors  
50 Overview for the Avaya G250 and Avaya G350 Media Gateways  
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WAN services  
RIP  
OSPF  
Route redistribution  
VRRP  
Fragmentation  
Static routes  
Policy based routing  
Distribution lists  
Dynamic IP addresses  
DNS resolver  
Unnumbered IP interfaces  
SYN cookies  
Keepalive packets  
Object tracking  
Backup interfaces  
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Summary of services  
52 Overview for the Avaya G250 and Avaya G350 Media Gateways  
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Chapter 4: Management, Security, Alarms  
and Troubleshooting  
Management applications  
The Avaya G250 and Avaya G350 Media Gateways can be managed using any of the following  
applications:  
Avaya G250 and Avaya G350 Command Line Interfaces  
Avaya G250/G350 Manager and Embedded Web Manager  
Avaya Integrated Management  
Avaya QoS Manager  
Avaya G250 and Avaya G350 Command Line Interfaces (CLI)  
You can use the Avaya G250 or G350 CLI to configure the G250/G350 and its media modules.  
The CLI is a textual command prompt interface. It is similar to the CLI of many other network  
devices.  
You can access the CLI with any of the following:  
Telnet through the network  
Telnet through dialup, using a dialup PPP network connection  
A console device connected to the Console port or on the G250/G350 front panel  
SSH (Secure Shell), which enables you to establish a remote session over a secured  
tunnel  
For information about each command in the CLI, see the Avaya G250 and Avaya G350 Media  
Gateway CLI Reference, 03-300437.  
For information about how to use the CLI to perform specific configuration tasks, see  
Administration for the Avaya G250 and Avaya G350 Media Gateways, 03-300436.  
Issue 5 June 2008 53  
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Management, Security, Alarms and Troubleshooting  
Avaya G250/G350 Manager and Embedded Web Manager  
Avaya G250/G350 Manager is a web-enabled graphical administration tool for configuring a  
single G250 or G350 device. You can use Avaya G250/G350 Manager to configure the G250 or  
G350 chassis and media modules. You can also use it for status monitoring and  
troubleshooting. You can open Avaya G250/G350 Manager in one of the following ways:  
From Avaya Integrated Management software  
From a web browser on a computer on the same network as the device (supported by the  
Avaya G350 only)  
For information about Avaya G250/G350 Manager, see the G250/G350/G450 Manager User  
Guide, 14-300166.  
Avaya Integrated Management  
Avaya Integrated Management offers a comprehensive set of web-based network and system  
management solutions that support Avaya converged voice solutions. You can use Avaya  
Integrated Management to monitor SNMP traps on the G250/G350. You can also use Avaya  
Integrated Management to access Avaya G250/G350 Manager.  
Avaya QoS Manager  
You can use Avaya QoS Manager to configure G250/G350 QoS policy capabilities. You can  
access Avaya QoS Manager through Avaya Integrated Management software.  
Management access security features  
The G250/G350 features the following management security mechanisms:  
A basic authentication mechanism in which users are assigned passwords and privilege  
levels  
Support for user authentication provided by an external RADIUS server  
SNMPv3 user authentication  
Secure data transfer via SSH and SCP with user authentication  
54 Overview for the Avaya G250 and Avaya G350 Media Gateways  
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Network security features  
ASG authentication for remote service logins. ASG is a challenge-response authentication  
method that is more secure than password authentication and does not require a static  
password.  
Network security features  
The Avaya G250/G350 Media Gateway provides the following network security features:  
Private secure connections can be configured between the G250/G350 and a remote peer,  
using VPN (Virtual Private Network). VPN at the IP level is deployed using a  
standards-based set of protocols defined by the IETF called IPSec. IPSec provides  
privacy, integrity, and authenticity to information transferred across IP networks.  
Access to the G250/G350’s LAN ports is authenticated using the 802.1x protocol. On the  
G350, you can enable 802.1x on the MM314 and MM316 media modules’ 10/100 Ethernet  
ports. On the G250, you can enable 802.1x on the eight Ethernet LAN PoE ports located  
on the G250’s front panel. The 802.1x protocol standard is extended to support an optional  
mode for authenticating multiple supplicants.  
Protection against DoS (Denial of Service) attacks via:  
- MSS notifications. The G250/G350 identifies predefined or custom-defined traffic  
patterns as suspected DoS attacks and generates SNMP notifications, referred to as  
Managed Security Services (MSS) notifications. MSS notifications are intercepted  
and, if certain conditions are met, may be forwarded to the Avaya Security Operations  
Center (SOC) as INADS alarms. The SOC is an Avaya service group that handles  
DoS alerts, responding as necessary to any DoS attack or related security issue.  
- SYN cookies, which protect against a well-known TCP/IP attack in which a malicious  
attacker targets a vulnerable device and effectively prevents it from establishing new  
TCP connections.  
Alarms and troubleshooting features  
The Avaya G250 and Avaya G350 Media Gateways have extensive features for error detection,  
alarms, and troubleshooting. Detailed diagnostic information and troubleshooting are provided  
by software-based solutions accessible by laptops in the field or remotely from an  
administrator’s computer. Administration for the Avaya G250 and Avaya G350 Media  
Gateways, 03-300436, provides a comprehensive guide to configuring and using these  
solutions.  
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Management, Security, Alarms and Troubleshooting  
Front panel LEDs  
LEDs on the front panel of the G250 and G350 and their media modules give a quick overall  
understanding of the health of the system and subsystems. When alarms or problems occur,  
LEDs indicate that a technician’s attention is needed.  
Automatic error detection  
During normal operations, software or firmware automatically detects and attempts to fix or  
circumvent error conditions. Errors are detected in two ways:  
Firmware on a system component during ongoing operations  
A “periodic test” or a “scheduled test” started by software  
A technician can run more comprehensive tests on demand.  
SNMP  
The G250/G350 reports alarms using SNMP traps. The G350 fully supports SNMP versions  
SNMPv1, SNMPv2c, and SNMPv3. The G250 supports SNMPv3 for sending SNMPv1,  
SNMPv2c, and SNMPv3 traps, but does not support the SNMPv1 trap mechanism.  
Packet sniffing  
The G250/G350 features packet sniffing. All packets, including non-Ethernet packets, that pass  
through the G250/G350, are recorded. The recorded packets are stored in a file that can be  
uploaded either to the S8xxx server or to a PC and read by Ethereal for troubleshooting  
purposes.  
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Alarms and troubleshooting features  
VoIP debugging using RTP-MIB  
The G250/G350 includes the RTP-MIB feature for debugging QoS-related problems across the  
VoIP network without any dedicated hardware. During each RTP stream, counters representing  
various QoS metrics increment whenever configured thresholds for the metrics are exceeded. A  
limited history of the QoS metric statistics is stored on the G250/G350 for active and terminated  
RTP streams. Statistics can be displayed via the G250/G350 CLI. In addition, the G250/G350  
can be configured to send SNMP traps to the SNMP trap manager on the S8xxx server at the  
termination of each RTP stream that has QoS problems. The traps are converted to syslog  
messages and stored for viewing in the messages file on the S8xxx server hard disk.  
Object tracking  
The G250/G350 includes object tracking. The purpose of object tracking is to track the state  
(up/down) of remote devices using keepalive probes, and notify registered applications when  
the state changes. Object tracking is utilized by applications such as VPN to track remote  
devices and take certain steps when the state of a remote device changes.  
Converged Network Analyzer (CNA) test plug  
CNA test plugs are a component of CNA, a distributed system tool for real-time network  
monitoring that detects and diagnoses converged network-related issues. CNA is deployed in the  
G250/G350 to identify any network conditions or impairments that can degrade the user  
experience for IP telephony and to monitor overall network performance. Test plugs in media  
gateways provide the ability to measure end-to-end service to the edge of the PSTN, or at points  
where codec changes are required for interworking between high (LAN) and low (WAN) speed  
links.  
Link Layer Discovery Protocol (LLDP)  
LLDP simplifies network troubleshooting and enhances the ability of network management tools  
to discover and maintain accurate network topologies in multi-vendor environments. LLDP  
defines a set of advertisement messages (TLVs), a protocol for transmitting the TLVs, and a  
method for storing the information contained in the received TLVs. This allows stations attached  
to a LAN to advertise information about the system and about the station’s point of attachment  
to the LAN to other stations attached to the same LAN. These can be reported to the  
management station via SNMP MIBs.  
On the G250, LLDP is supported on all the Ethernet LAN ports on the chassis.  
On the G350, LLDP is supported on the Ethernet LAN ports located on the MM314 and MM316  
media modules.  
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Management, Security, Alarms and Troubleshooting  
58 Overview for the Avaya G250 and Avaya G350 Media Gateways  
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Chapter 5: Documentation  
The following documentation is available to help you implement the G250 or G350 in your  
environment:  
Installing and Upgrading the Avaya G250 Media Gateway, 03-300434. Describes how to  
install and upgrade the G250, prepare the G250 for software configuration, and perform  
some basic configurations. This guide describes how to insert media modules and connect  
external devices to the G250 and media module ports.  
Installing and Upgrading the Avaya G350 Media Gateway, 03-300394. Describes how to  
install and upgrade the G350, prepare the G350 for software configuration, and perform  
some basic configurations. This guide describes how to insert media modules and connect  
external devices to the G350 and media module ports.  
Quick Start for Hardware Installation for the Avaya G250 Media Gateway, 03-300433. A  
concise installation guide covering assembly and basic configuration of the G250.  
Quick Start for Hardware Installation for the Avaya G350 Media Gateway, 03-300148. A  
concise installation guide covering assembly and basic configuration of the G350.  
Administration for the Avaya G250 and Avaya G350 Media Gateways, 03-300436.  
Describes how to configure and manage the G250/G350 after it is already installed. This  
guide contains detailed information about all the features of the G250/G350 and how to  
implement them.  
Avaya G250/G350/G450 Manager User Guide, 14-300166. Describes how to use the  
Avaya G250/G350/G450 Manager software to manage the G250/G350/G450.  
Avaya G250 and Avaya G350 CLI Reference, 03-300437. Describes the commands in the  
G250/G350 CLI.  
Maintenance Alarms for Avaya Communication Manager, Media Gateways and Servers,  
03-300430. Describes MOs and how to resolve alarms.  
Maintenance Commands for Avaya Communication Manager, Media Gateways and  
Servers, 03-300431. Describes all the commands across platforms.  
Maintenance Procedures for Avaya Communication Manager, Media Gateways and  
Servers, 03-300432. Describes maintenance procedures such as network recovery.  
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Documentation  
60 Overview for the Avaya G250 and Avaya G350 Media Gateways  
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Appendix A: G250 and G350 capacities  
G250 maximum media gateway capacities  
Table 13: G250 media gateway capacities  
Description  
Capacity  
Comments  
Maximum number of G250 Media  
Gateways controlled by an external  
S8500 or S8700-series server  
250  
This number also applies if a  
combination of Avaya G700 Media  
Gateways, Avaya G450 Media  
Gateways, Avaya G350 Media  
Gateways, and G250 Media  
Gateways are controlled by the  
same external S8xxx server.  
Maximum number of G250 Media  
Gateways controlled by an external  
S8300 server housed in a G700 Media  
Gateway  
50  
4
S8xxx servers registered as Media  
Gateway Controllers. If an MGC  
becomes unavailable, the G250 uses  
the next MGC on the list.  
The built-in SLS module can be  
considered a fifth MGC, although its  
functionality is more limited than that  
of a full scale S8xxx server.  
Media module slots  
2
One S8300 server slot (V1) for  
insertion of S8300 only.  
One WAN media module slot (V2)  
for insertion of a WAN media module  
only.  
Maximum number of WAN media  
modules  
1
Always in slot v2.  
Maximum number of voice media  
modules  
0
Maximum total number of telephones  
supported by the G250  
14  
1 of 3  
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G250 and G350 capacities  
Table 13: G250 media gateway capacities (continued)  
Description  
Capacity  
Comments  
Maximum number of IP phones  
12  
Limited by the number of VoIP  
resources used and the calling  
patterns (VoIP to VoIP conferencing,  
VoIP to non-VoIP, etc.)  
Maximum number of analog phones  
Maximum number of DCP phones  
Maximum number of BRI endpoints  
DS1 facilities  
2
12  
G250-DCP only. None in the other  
G250 models.  
0
1 T1/E1  
G250-DS1 only. None in the other  
G250 models.  
Maximum number of all trunks of any  
type  
4 (5 on G250-BRI,  
10 on G250-DS1)  
Maximum number of analog trunks  
Maximum number of BRI trunks  
4 (G250-Analog,  
G250-DCP)  
All ports are fixed.  
1 (G250-BRI,  
G250-DS1)  
2 (G250-BRI only) Four voice channels, two  
D-channels.  
Maximum number of E1/T1 voice  
trunks  
1
G250-DS1 only. None in the other  
G250 models.  
Simultaneous two-way conversations  
from IP phone to legacy telephone or  
trunk  
10 (G250-Analog, True for all codecs, and all  
G250-BRI)  
encryption combinations.  
16 (G250-DCP,  
G250-DS1)  
Miscellaneous  
Fax capacity  
4
8
Simultaneous fax transmissions  
using VoIP resources.  
Touch-tone recognition (TTR)  
Tone Generation  
Receivers  
As much as necessary for all TDM calls.  
2 of 3  
62 Overview for the Avaya G250 and Avaya G350 Media Gateways  
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G350 maximum media gateway capacities  
Table 13: G250 media gateway capacities (continued)  
Description  
Capacity  
Comments  
Announcements (VAL)  
6 playback channels for playing announcements.  
10 minutes for G711-quality stored announcements and  
up to five minutes for music-on-hold.  
3 of 3  
!
CAUTION:  
CAUTION:  
Some capacities may change. For the most up-to-date list, see Avaya  
Communication Manager System Capacities Table, 03-300511.  
G350 maximum media gateway capacities  
Table 14: G350 media gateway capacities  
Description  
Standard  
Enhanced  
Comments  
Configuration Configuration  
Media Gateway Limits  
Maximum number of G350 250  
Media Gateways  
controlled by an S8500 or  
S8700-series server  
This number also applies if the  
same external S8xxx server  
controls a combination of Avaya  
G700 Media Gateways, Avaya  
G450 Media Gateways, Avaya  
G350 Media Gateways, and  
G250 Media Gateways  
Maximum number of G350 50  
Media Gateways  
controlled by a S8300  
server housed in a G700  
Media Gateway.  
Maximum number of G350  
or G250 Media Gateways  
controlled by a S8300  
server housed in a G350  
Media Gateway.  
5
An S8300 housed in a G350 can  
also control G150 or Multitech  
Gateways  
1 of 3  
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G250 and G350 capacities  
Table 14: G350 media gateway capacities (continued)  
Description  
Standard  
Enhanced  
Comments  
Configuration Configuration  
Maximum total number of  
telephones supported by  
the G350  
40  
40  
40  
72  
Limited by the physical hardware  
resources and what is supported  
in ASD  
Maximum number of IP  
telephones per G350  
Media Gateway  
72 (using an  
Limited by the physical hardware  
external switch) resources and what is supported  
in ASD  
Maximum number of  
analog phones per G350  
Media Gateway  
72  
Maximum number of DCP 40  
phones per G350 Media  
Gateway  
72  
Maximum number of BRI  
endpoints per G350 Media  
Gateway  
16  
64  
Up to three MM720 BRI Media  
Modules can be inserted in any  
standard media module slots.  
Simultaneous two-way  
conversations from IP  
phone to legacy telephone  
or trunk.  
32 – G.711  
16 – G.729a, G.726  
Simultaneous two-way  
conversations limited by the VoIP  
engine, including call progress  
tones  
Transcoding from G.711/  
TDM phones to G.729 for  
IP phones  
16  
Simultaneous 2-way  
conversations.  
For TDM transcoding, the number  
16 applies to conversations  
where one end of each  
conversation is on a G350 and  
transcoding occurs for that  
endpoint on the G350. If  
transcoding must occur on both  
ends of the conversation, the  
quantity of conversations is ten.  
Maximum number of BRI  
trunks  
16  
32  
Maximum number of  
PSTN trunks  
24 (T1)  
30 (E1)  
48 (T1)  
60 (E1)  
Miscellaneous  
Fax capacity  
8
Simultaneous fax transmissions  
using VoIP resources.  
2 of 3  
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S8300 maximum capacities  
Table 14: G350 media gateway capacities (continued)  
Description  
Standard  
Enhanced  
Comments  
Configuration Configuration  
Touch-tone recognition  
(TTR)  
15  
Tone Generation  
15  
Announcements (VAL)  
6 Playback, 1 Record  
3 of 3  
Note:  
Note:  
The maximum capacities in Advanced Configuration depend on the specific  
configuration of the Branch Gateway. Please verify your planned configuration on  
Avaya Solution Designer (ASD).  
S8300 maximum capacities  
Table 15: S8300 capacities  
Item  
Quantity  
Supported  
Number of Users per S8300  
Number of Trunks per S8300  
450  
450  
Total Endpoints (Trunks and Users) per S8300 900  
MGs per S8300  
50  
LSPs per S8300  
50  
MGs per LSP  
50  
Announcement Sources per S8300  
Busy Hour Calls (Maximum, non-call center)  
Locations  
50  
10,000  
50  
For a complete list of capacities, see Avaya Communication Manager System Capacities Table,  
03-300511.  
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G250 and G350 capacities  
66 Overview for the Avaya G250 and Avaya G350 Media Gateways  
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Appendix B: Supported Avaya telephones  
There are various Avaya telephones supported by the G250 and G350, including IP, DCP  
digital, and analog telephones.  
Avaya IP telephones  
The G250/G350 support the following Avaya IP telephones:  
Avaya 4602 IP Telephone  
Avaya 4602SW IP Telephone  
Avaya 4601 IP Telephone  
Avaya 4606 IP Telephone  
Avaya 4610 IP Telephone  
Avaya 4612 IP Telephone  
Avaya 4620 IP Telephone  
Avaya 4624 IP Telephone  
Avaya 4630 IP Screenphone  
Avaya 4630SW IP Screenphone  
Avaya 4690 IP Telephone  
Note:  
Note:  
The Avaya 4630 IP and 4630SW IP Screenphones cannot be powered via PoE  
ports.  
Avaya DCP digital telephones  
The G250-DCP and the DCP media modules supported by the G350 support the following DCP  
telephones:  
Note:  
Note:  
The G250 does not support DCP media modules, although the G250-DCP  
includes DCP ports on its chassis.  
Avaya 2402 Digital Telephone  
Avaya 2410 Digital Telephone  
Avaya 2420 Digital Telephone  
Avaya 2490 DCP Speakphone  
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Supported Avaya telephones  
Avaya 6402 and Avaya 6402D Digital Telephones  
Avaya 6408+ and Avaya 6408D+ Digital Telephones  
Avaya 6416D+ and 6416D+M Digital Telephone  
Avaya 6424D+ and 6424D+M Digital Telephone  
Avaya 8403 Digital Telephone  
Avaya 8405B and Avaya 8405D+ Digital Telephones  
Avaya 8410 and 8410D Digital Telephones  
Avaya 8411D Digital Telephone  
Avaya 8434DX Digital Telephone  
IP softphones that are configured as "Road Warrior" and "Take Over" a DCP station  
Definity Extender – Analog single endpoint  
Definity Extender – ISDN single endpoint 302 series Attendant Console (302D)  
Avaya 603E Call Master III  
Avaya 603F Call Master IV  
Avaya 607A Call Master V  
Avaya 606B1 Call Master VI  
Avaya eConsole R1 (PC Console R3 with 8411 digital telephone)  
Avaya IP eConsole  
Avaya analog telephones  
The G250 and G350 support the following Avaya analog telephones:  
Avaya 6211 Analog Telephone  
Avaya 6219 Analog Telephone  
Avaya 2500 and the Avaya 2554 Analog Terminals  
2520 Explosive Atmosphere Telephone  
68 Overview for the Avaya G250 and Avaya G350 Media Gateways  
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Appendix C: G250 technical specifications  
The G250 technical specifications include physical dimensions and tolerances of the Avaya  
G250 Media Gateway, power cord specifications and media module specifications.  
G250 specifications  
The table of technical specifications provides detailed information on the physical dimensions  
and tolerances of the Avaya G250 Media Gateway:  
Table 16: Avaya G250 Media Gateway specifications  
Description  
Value  
Height  
20 (3.5 in., 88 mm)  
17.3 in. (440 mm)  
Width  
Depth  
13.4 in. (340 mm)  
Weight of empty chassis  
Ambient working temperature  
Operation altitude  
Front Clearance  
Rear Clearance  
Humidity  
16.5 lb. (6.5 kg)  
32° to 104°F (0° to 40°C)  
up to 6,560 ft. (2,000 m)  
12 in. (30 cm)  
18 in. (45 cm)  
10-90% relative humidity  
90-264 VAC, 47-63 Hz, 2.2 A Max  
Power rating  
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G250 technical specifications  
G250 power cord specifications  
For North America: The cord set must be UL Listed/CSA Certified, 16 AWG, 3-conductor (3rd  
wire ground), type SJT. One end is to be terminated to an IEC 60320, sheet C13 type connector  
rated 10A, 250V. The other end is to be terminated to either a NEMA 5-15P attachment plug for  
nominal 125V applications or a NEMA 6-15P attachment plug for nominal 250V applications.  
For Outside North America: The cord must be VDE Certified or Harmonized (HAR), rated  
250V, 3-conductor (3rd wire ground), 1.0 mm2 minimum conductor size. The cord is to be  
terminated at one end to a VDE Certified/CE Marked IEC 60320, sheet C13 type connector  
rated 10A, 250V and the other end to a 3-conductor grounding type attachment plug rated at a  
minimum of 10A, 250V and a configuration specific for the region/country in which it will be  
used. The attachment plug must bear the safety agency certifications mark(s) for the region/  
country of installation.  
G250 media module specifications  
Table 17: Media modules  
Description  
Value  
Height  
Width  
Depth  
Weight  
2 cm  
17 cm  
31 cm  
300-400 grams  
70 Overview for the Avaya G250 and Avaya G350 Media Gateways  
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Appendix D: G350 technical specifications  
The G350 technical specifications include physical dimensions and tolerances of the Avaya  
G350 Media Gateway, power cord specifications, and media module specifications.  
G350 specifications  
The table of technical specifications provides detailed information on the physical dimensions  
and tolerances of the Avaya G350 Media Gateway:  
Table 18: Avaya G350 Media Gateway specifications  
Description  
Value  
Height  
5.25 in. (133.3 mm)  
Width  
19 in. (482.6 mm)  
Depth  
15.75 in. (400 mm)  
Weight of empty chassis  
Ambient working temperature  
Operation altitude  
Front Clearance  
Rear Clearance  
Humidity  
19.8 to 22.1 lb. (9 to 10 kg)  
32° to 104°F (0° to 40°C)  
up to 6,560 ft. (2000 m)  
12 in. (30 cm)  
18 in. (45 cm)  
10-90% relative humidity  
90-264 VAC, 47-63 Hz, 7 A Max  
Power rating  
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G350 technical specifications  
G350 power cord specifications  
For North America: The cord set must be UL Listed/CSA Certified, 16 AWG, 3-conductor (3rd  
wire ground), type SJT. One end is to be terminated to an IEC 60320, sheet C13 type connector  
rated 10A, 250V. The other end is to be terminated to either a NEMA 5-15P attachment plug for  
nominal 125V applications or a NEMA 6-15P attachment plug for nominal 250V applications.  
For Outside North America: The cord must be VDE Certified or Harmonized (HAR), rated  
250V, 3-conductor (3rd wire ground), 1.0 mm2 minimum conductor size. The cord is to be  
terminated at one end to a VDE Certified/CE Marked IEC 60320, sheet C13 type connector  
rated 10A, 250V and the other end to a 3-conductor grounding type attachment plug rated at a  
minimum of 10A, 250V and a configuration specific for the region/country in which it will be  
used. The attachment plug must bear the safety agency certifications mark(s) for the region/  
country of installation.  
G350 media module specifications  
Table 19: Media modules  
Description  
Value  
MM312, MM314, and MM316 media modules  
Height  
Width  
4.4 cm  
39 cm  
31 cm  
3-4 kg  
Depth  
Weight  
Other media modules  
Height  
Width  
0.79 in. (2 cm)  
6.69 in. (17 cm)  
12.20 in. (31 cm)  
Depth  
Weight  
0.7-0.9 lb. (300-400  
grams)  
72 Overview for the Avaya G250 and Avaya G350 Media Gateways  
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Index  
Index  
Installing and Upgrading the Avaya G350 Media  
Gateway . . . . . . . . . . . . . . . . . . . 59  
Maintenance Alarms for Avaya Communication Manager  
5.0, Media Gateways and Servers . . . . . . . 59  
Maintenance Commands for Avaya Communication  
Manager 5.0, Media Gateways and Servers . . . 59  
Numerical  
802.1x . . . . . . . . . . . . . . . . . . . . . . 55  
Maintenance Procedures for Avaya Communication  
A
Manager 5.0, Media Gateways and Servers . . . 59  
ACM, see Avaya Communication Manager  
Administration for the Avaya G250 and Avaya G350 Media  
Gateways . . . . . . . . . . . . . . . . . . . . 59  
Alarms and troubleshooting. . . . . . . . . . . . . 55  
Automatic error detection. . . . . . . . . . . . . . 56  
Avaya Communication Manager (ACM)  
S8xxx server integration. . . . . . . . . . . . . .11  
Avaya Communication Manager (CM)  
Quick Start for Hardware Installation for the Avaya G250  
Media Gateway . . . . . . . . . . . . . . . . 59  
Quick Start for Hardware Installation for the Avaya G350  
Media Gateway . . . . . . . . . . . . . . . . 59  
DoS attacks . . . . . . . . . . . . . . . . . . 54, 55  
Dry contacts . . . . . . . . . . . . . . . . . . . . 45  
Dynamic trap manager . . . . . . . . . . . . . . . 43  
feature categories . . . . . . . . . . . . . . . 43  
software uses . . . . . . . . . . . . . . . . . 43  
Avaya G250 and Avaya G350 CLI Reference . . . . 59  
Avaya G250/G350/G450 Manager User Guide. . . . 59  
Avaya Softphone software . . . . . . . . . . . .38, 40  
Avaya telephones, which supported. . . . . . . . . 67  
E
ECC (External Call Controller). . . . . . . . . . . . 40  
ELS (Enhanced Local Survivability) . . . . . . . . . 41  
Embedded Web Manager . . . . . . . . . . . . . . 54  
Enhanced Local Survivability (ELS) . . . . . . . . . 11  
ETR (Emergency Transfer Relay)  
C
feature . . . . . . . . . . . . . . . . . . . . . 44  
Call center features . . . . . . . . . . . . . . . . 44  
Calls, preserving. . . . . . . . . . . . . . . . . . 42  
Capacities. . . . . . . . . . . . . . . . . . . . . 61  
Chatter . . . . . . . . . . . . . . . . . . . . . . 57  
CLI documentation. . . . . . . . . . . . . . . . . 59  
CM, see Avaya Communication Manager  
CNA test plug . . . . . . . . . . . . . . . . . . . 57  
Computer, as a telephone . . . . . . . . . . . .38, 40  
Contact Closure . . . . . . . . . . . . . . . . . . 45  
Continuous telephone services . . . . . . . . . . . 41  
F
Fax over IP. . . . . . . . . . . . . . . . . . . . . 45  
Features . . . . . . . . . . . . . . . . . . . . . . 12  
Fixed LAN port . . . . . . . . . . . . . . . . . . . 45  
Front panel  
G250-Analog . . . . . . . . . . . . . . . . . . 15  
G250-BRI. . . . . . . . . . . . . . . . . . . . 15  
G250-DCP . . . . . . . . . . . . . . . . . . . 16  
G250-DS1 . . . . . . . . . . . . . . . . . . . 16  
G350 . . . . . . . . . . . . . . . . . . . . . . 19  
LEDs . . . . . . . . . . . . . . . . . . . . . . 56  
D
Diagnostic tools  
automatic error detection . . . . . . . . . . . . 56  
LLDP . . . . . . . . . . . . . . . . . . . . . 57  
object tracking . . . . . . . . . . . . . . . . . 57  
SNMP . . . . . . . . . . . . . . . . . . . . . 56  
Documentation  
G
G250  
analog model, see G250-Analog  
BRI model, see G250-BRI  
DCP model, see G250-DCP  
Administration for the Avaya G250 and Avaya G350  
Media Gateways . . . . . . . . . . . . . . . 59  
Avaya G250 and Avaya G350 CLI Reference. . . 59  
Avaya G250/G350/G450 Manager User Guide . . 59  
Installing and Upgrading the Avaya G250 Media  
Gateway . . . . . . . . . . . . . . . . . . . 59  
DS1 model, see G250-DS1  
standalone deployment . . . . . . . . . . . . . 11  
G250-Analog  
front panel . . . . . . . . . . . . . . . . . . . 15  
physical description . . . . . . . . . . . . . . . 15  
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Index  
G250-BRI . . . . . . . . . . . . . . . . . . . . . 12  
front panel . . . . . . . . . . . . . . . . . . . 15  
physical description . . . . . . . . . . . . . . . 15  
G250-DCP . . . . . . . . . . . . . . . . . . . . 12  
front panel . . . . . . . . . . . . . . . . . . . 16  
physical description . . . . . . . . . . . . . . . 16  
G250-DS1. . . . . . . . . . . . . . . . . . . . . 12  
front panel . . . . . . . . . . . . . . . . . . . 16  
physical description . . . . . . . . . . . . . . . 16  
G350  
Embedded Web Manager . . . . . . . . . . . . 54  
G250 manager . . . . . . . . . . . . . . . . . 54  
G350 manager . . . . . . . . . . . . . . . . . 54  
integrated management . . . . . . . . . . . . . 54  
QoS manager . . . . . . . . . . . . . . . . . . 54  
Manuals  
Administration for the Avaya G250 and Avaya G350  
Media Gateways . . . . . . . . . . . . . . . . 59  
Avaya G250 and Avaya G350 CLI Reference . . . 59  
Avaya G250/G350/G450 Manager User Guide . . 59  
Installing and Upgrading the Avaya G250 Media  
Gateway . . . . . . . . . . . . . . . . . . . 59  
Installing and Upgrading the Avaya G350 Media  
Gateway . . . . . . . . . . . . . . . . . . . 59  
front panel . . . . . . . . . . . . . . . . . . . 19  
physical description . . . . . . . . . . . . . . . 19  
standalone deployment . . . . . . . . . . . . . .11  
Maintenance Alarms for Avaya Communication Manager  
5.0, Media Gateways and Servers . . . . . . . 59  
Maintenance Commands for Avaya Communication  
Manager 5.0, Media Gateways and Servers . . . 59  
Maintenance Procedures for Avaya Communication  
Manager 5.0, Media Gateways and Servers . . . 59  
Quick Start for Hardware Installation for the Avaya G250  
Media Gateway . . . . . . . . . . . . . . . . 59  
Quick Start for Hardware Installation for the Avaya G350  
Media Gateway . . . . . . . . . . . . . . . . 59  
I
ICC (Internal Call Controller) . . . . . . . . . . . . 40  
IEEE 802.1D . . . . . . . . . . . . . . . . . . . 47  
IEEE 802.1w . . . . . . . . . . . . . . . . . . . 47  
Index over IP . . . . . . . . . . . . . . . . . . . 45  
Installing and Upgrading the Avaya G250 Media Gateway59  
Installing and Upgrading the Avaya G350 Media Gateway59  
Introduction . . . . . . . . . . . . . . . . . . . . .11  
Media Gateway services  
MGC (Media Gateway Controller) . . . . . . . . 40  
overview . . . . . . . . . . . . . . . . . . . . 37  
physical media . . . . . . . . . . . . . . . . . 38  
physical media on G250 . . . . . . . . . . . . . 39  
Voice over IP (VoIP). . . . . . . . . . . . . . . 57  
voice related features . . . . . . . . . . . . . . 44  
VoIP (Voice over IP). . . . . . . . . . . . . . . 37  
Media modules  
K
keepalive . . . . . . . . . . . . . . . . . . . . . 57  
L
LAN  
media modules . . . . . . . . . . . . . . . . . 32  
LAN ports  
fixed . . . . . . . . . . . . . . . . . . . . . . 45  
switched . . . . . . . . . . . . . . . . . . . . 45  
LAN services  
overview . . . . . . . . . . . . . . . . . . . . 45  
physical media . . . . . . . . . . . . . . . . . 45  
PoE (Power over Ethernet) . . . . . . . . . . . 46  
port redundancy . . . . . . . . . . . . . . . . 47  
RSTP (Rapid Spanning Tree Protocol) . . . . . . 47  
VLANs configuration . . . . . . . . . . . . . . 46  
LEDs . . . . . . . . . . . . . . . . . . . . . . . 56  
LLDP (Link Layer Discovery Protocol) . . . . . . . . 57  
LSP (Local Survivable Processor). . . . . . . . .41, 42  
analog . . . . . . . . . . . . . . . . . 25, 26, 27  
BRI. . . . . . . . . . . . . . . . . . . . . 29, 30  
DCP . . . . . . . . . . . . . . . . . . . . . . 28  
E1/T1. . . . . . . . . . . . . . . . . . . . . . 29  
E1/T1 WAN . . . . . . . . . . . . . . . . . . . 31  
LAN . . . . . . . . . . . . . . . . . . . . . . 32  
MM312 . . . . . . . . . . . . . . . . . . . . . 28  
MM314 . . . . . . . . . . . . . . . . . . . . . 32  
MM316 . . . . . . . . . . . . . . . . . . . . . 33  
MM340 . . . . . . . . . . . . . . . . . . . . . 31  
MM342 . . . . . . . . . . . . . . . . . . . . . 31  
MM710 . . . . . . . . . . . . . . . . . . . . . 29  
MM710 features. . . . . . . . . . . . . . . . . 29  
MM711 . . . . . . . . . . . . . . . . . . . . . 25  
MM712 . . . . . . . . . . . . . . . . . . . . . 28  
MM714 . . . . . . . . . . . . . . . . . . . . . 26  
MM716 . . . . . . . . . . . . . . . . . . . . . 27  
MM717 . . . . . . . . . . . . . . . . . . . . . 28  
MM720 . . . . . . . . . . . . . . . . . . . . . 29  
MM722 . . . . . . . . . . . . . . . . . . . . . 30  
permitted slots . . . . . . . . . . . . . . . . . 34  
slot configuration . . . . . . . . . . . . . . . . 34  
supported. . . . . . . . . . . . . . . . . . . . 23  
M
Management  
access permissions . . . . . . . . . . . . . . . 54  
alarms and troubleshooting . . . . . . . . . . . 55  
applications . . . . . . . . . . . . . . . . . . 53  
Management tools . . . . . . . . . . . . . . . . . 53  
Command Line Interface (CLI). . . . . . . . . . 53  
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Index  
supported in G250 . . . . . . . . . . . . . . . 35  
telephony . . . . . . . . . . . . . . . . . . . 25  
universal serial data WAN . . . . . . . . . . . . 31  
WAN. . . . . . . . . . . . . . . . . . . . . . 31  
MGC (Media Gateway Controller)  
R
RADIUS server. . . . . . . . . . . . . . . . . . . 54  
Routing features . . . . . . . . . . . . . . . . . . 50  
RSTP (Rapid Spanning Tree Protocol). . . . . . . . 47  
RTP-MIB. . . . . . . . . . . . . . . . . . . . . . 57  
overview . . . . . . . . . . . . . . . . . . . . 40  
S8xxx server management . . . . . . . . . . . 43  
supported models. . . . . . . . . . . . . . . . .11  
supported S8xxx servers . . . . . . . . . . . . 41  
MM312 media module . . . . . . . . . . . . . . . 28  
MM340 media module . . . . . . . . . . . . . . . 31  
MM342 media module . . . . . . . . . . . . . . . 31  
MM710 media modules . . . . . . . . . . . . . . 29  
MM711 media module . . . . . . . . . . . . . . . 25  
MM712 media module . . . . . . . . . . . . . . . 28  
MM714 media module . . . . . . . . . . . . . . . 26  
MM716 media module . . . . . . . . . . . . . . . 27  
MM717 media module . . . . . . . . . . . . . . . 28  
MM720 media module . . . . . . . . . . . . . . . 29  
MM722 media module . . . . . . . . . . . . . . . 30  
MSS notifications . . . . . . . . . . . . . . . . . 55  
S
S8300 server  
described . . . . . . . . . . . . . . . . . . . . 24  
features. . . . . . . . . . . . . . . . . . . . . 24  
supported. . . . . . . . . . . . . . . . . . . . 11  
S8400 server. . . . . . . . . . . . . . . . . . . . 11  
S8500 server. . . . . . . . . . . . . . . . . . . . 11  
S8700 server. . . . . . . . . . . . . . . . . . . . 11  
S8710 server. . . . . . . . . . . . . . . . . . . . 11  
S8720 server. . . . . . . . . . . . . . . . . . . . 11  
S8730 server. . . . . . . . . . . . . . . . . . . . 11  
SCP . . . . . . . . . . . . . . . . . . . . . . . . 54  
Security features . . . . . . . . . . . . . . . . . . 55  
Servers  
O
S8300 . . . . . . . . . . . . . . . . . . . . . 24  
Services  
Object tracking . . . . . . . . . . . . . . . . . . 57  
Outside telephone lines for G250 . . . . . . . . . . 40  
LAN . . . . . . . . . . . . . . . . . . . . . . 45  
Media Gateway . . . . . . . . . . . . . . . . . 37  
summary . . . . . . . . . . . . . . . . . . . . 37  
telephone . . . . . . . . . . . . . . . . . . . . 37  
SNMP . . . . . . . . . . . . . . . . . . . 54, 56, 57  
Softphone software . . . . . . . . . . . . . . . 38, 40  
Specifications . . . . . . . . . . . . . . . . . . . 71  
G250 . . . . . . . . . . . . . . . . . . . . . . 69  
SSH . . . . . . . . . . . . . . . . . . . . . . . . 54  
Standard Local Survivability (SLS). . . . . . . . . . 11  
STP (Spanning Tree Protocol). . . . . . . . . . . . 47  
Survivability . . . . . . . . . . . . . . . . . . . . 42  
Switched LAN ports. . . . . . . . . . . . . . . . . 45  
SYN cookies . . . . . . . . . . . . . . . . . . . . 55  
P
Packet sniffing. . . . . . . . . . . . . . . . . . . 56  
Physical description  
G250-Analog . . . . . . . . . . . . . . . . . . 15  
G250-BRI . . . . . . . . . . . . . . . . . . . 15  
G250-DCP . . . . . . . . . . . . . . . . . . . 16  
G250-DS1 . . . . . . . . . . . . . . . . . . . 16  
G350 . . . . . . . . . . . . . . . . . . . . . 19  
PoE (Power over Ethernet)  
Overview. . . . . . . . . . . . . . . . . . . . 46  
Port mirroring . . . . . . . . . . . . . . . . . . . 47  
Port redundancy . . . . . . . . . . . . . . . . . . 47  
Ports  
for telephone lines . . . . . . . . . . . . . . . 39  
for telephone lines on G250 . . . . . . . . . . . 40  
for telephones . . . . . . . . . . . . . . . . . 38  
for telephones on G250 . . . . . . . . . . . . . 39  
LAN . . . . . . . . . . . . . . . . . . . . . . 45  
T
Target environment. . . . . . . . . . . . . . . . . 11  
Technical specifications. . . . . . . . . . . . . . . 71  
G250 . . . . . . . . . . . . . . . . . . . . . . 69  
Telephones  
G250 ports for different types . . . . . . . . . . 39  
outside lines . . . . . . . . . . . . . . . . . . 39  
outside lines on G250 . . . . . . . . . . . . . . 40  
ports for different types . . . . . . . . . . . . . 38  
services . . . . . . . . . . . . . . . . . . . . 37  
supported. . . . . . . . . . . . . . . . . . . . 38  
supported on G250 . . . . . . . . . . . . . . . 39  
which supported. . . . . . . . . . . . . . . . . 67  
Troubleshooting  
Product introduction . . . . . . . . . . . . . . . . .11  
Q
Quick Start for Hardware Installation for the Avaya G250  
Media Gateway . . . . . . . . . . . . . . . . . 59  
Quick Start for Hardware Installation for the Avaya G350  
Media Gateway . . . . . . . . . . . . . . . . . 59  
Issue 5 June 2008 75  
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Index  
automatic error detection . . . . . . . . . . . . 56  
front panel LEDs . . . . . . . . . . . . . . . . 56  
LLDP . . . . . . . . . . . . . . . . . . . . . 57  
packet sniffing . . . . . . . . . . . . . . . . . 56  
SNMP . . . . . . . . . . . . . . . . . . . . . 56  
Troubleshooting and alarms . . . . . . . . . . . . 55  
TTY over IP . . . . . . . . . . . . . . . . . . . . 45  
V
VLAN features. . . . . . . . . . . . . . . . . . . 46  
Voice over IP (VoIP) services. . . . . . . . . . .37, 57  
Voice software. . . . . . . . . . . . . . . . . .38, 40  
VPN . . . . . . . . . . . . . . . . . . . . . . . 55  
W
WAN features . . . . . . . . . . . . . . . . . . . 49  
access control lists . . . . . . . . . . . . . . . 50  
inter-gateway alternate routing (IGAR) . . . . . . 50  
policy based routing. . . . . . . . . . . . . . . 50  
RTP header compression . . . . . . . . . . . . 50  
TCP header compression . . . . . . . . . . . . 50  
WAN media modules. . . . . . . . . . . . . . . . 31  
WAN services  
overview . . . . . . . . . . . . . . . . . . . . 47  
physical media . . . . . . . . . . . . . . . . . 48  
routing features. . . . . . . . . . . . . . . . . 50  
76 Overview for the Avaya G250 and Avaya G350 Media Gateways  
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