RADIANCE
ACCESS LINE CARDS
100 BASE
MAN FD PWR
100 BASE
MAN FD PWR
100 BASE
MAN FD PWR
T
T
X
RX
LK
RX
LK
T
X
RX
LK
X
x
II
x
II
x
II
LBK
DIS
LBK
DIS
LBK
DIS
R
X
RX
RX
RX
S
M
LK
LK
LK
LBK
DIS
T
X
LBK
DIS
LBK
FX
FX
FX
DIS
100 BASE
MAN FD PWR
100 BASE
MAN FD PWR
100 BASE
MAN FD PWR
RX
T
T
T
X
RX
RX
LK
X
X
LK
LK
LBK
DIS
LBK
DIS
x
II
x
II
x
II
LBK
DIS
R
X
RX
LK
S
M
RX
RX
LK
T
X
LK
LBK
DIS
LBK
DIS
LBK
FX
CWDM
FX
DIS
Installation & User Guide
Models:R231-13 / R231-14 / R231-15 / R231-16 / R231-17 / R231-1J /
R231-1X / R231-1Y / R231-47 / R231-49 / R231-51 / R231-53 /
R231-55 / R231-57 / R231-59 / R231-61
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Table of Contents
Radiance Access Line Cards Installation & User Guide
Overview .............................................................................................................. 4
Installation Guide ............................................................................................... 6
STEP 1: Unpack the Line Cards ........................................................... 6
STEP 2: Set the Switches ...................................................................... 6
STEP 3: Install the Line Card ............................................................... 9
STEP 4: Connect to the Network ........................................................ 10
User Guide ........................................................................................................ 12
LED Indicators .................................................................................... 12
Factory Settings................................................................................... 12
Software Settings ................................................................................ 13
Remote Management Statistics ........................................................... 15
Singlemode Fiber Optic Power Levels ............................................... 16
Link Loss Carry Forward (LLCF) ...................................................... 17
Link Loss Return (LLR) ..................................................................... 18
Topology Solutions ............................................................................. 19
Technical Specifications...................................................................... 20
Product Safety, EMC and Compliance Statements ............................. 22
Warranty and Servicing ....................................................................... 23
Metrobility, Metrobility Optical Systems, and NetBeacon are registered trademarks of Metrobility Optical Systems, Inc. The
Metrobility Optical Systems logo is a trademarks of Metrobility Optical Systems, Inc.
The information contained in this document is assumed to be correct and current. The manufacturer is not responsible for
errors or omissions and reserves the right to change specifications at any time without notice.
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®
Overview
The Metrobility Radiance 100Mbps Access Line Cards are the industry’s
first media converters with the ability to reach across a wide area network
(WAN) to communicate, test and reconfigure an unmanaged remote device,
without reducing the available bandwidth to the customer site. This capability is
accomplished through the employment of Metrobility’s revolutionary Radiance
technology. Using this protocol, the line cards are able to receive and transmit
special management packets in an embedded side channel that exists between
data packets.
Radiance access line cards continually exchange information in a master/slave
relationship through the fiber optic port. A card can serve as both a master and a
slave. While the master card must be under local software control via an SNMP
agent such as Metrobility’s NetBeacon® or WebBeacon management software, the
slave card can be located up to 100 km away.
Through NetBeacon, the network administrator can open a dialog with the remote
device to reset its hardware switch settings, monitor its environmental parameters,
or view port details and statistics. NetBeacon provides extensive real-time and
historical graphs to display information such as the packet error rate and packet
details. The administrator can also conduct tests on the remote link, without any
bandwidth reduction, and isolate problems to prevent downtime. This end-to-end
visibility and testing of the network simplifies network management and increases
reliability.
The Radiance access line card offers several operational functions that are set by
the user through hardware switches, software commands or remote management
instructions. Among the features unique to the card are loopback mode, bandwidth
provisioning with adjustable burst size setting, Far End Fault (FEF), and write
protection. Loopback enables a port to return its incoming data back to the sender.
Bandwidth provisioning and maximum burst size setting allow the user to set the
receive (RX) and transmit (TX) bandwidth through the copper port. FEF enables a
locally managed line card to detect a break in the remote card’s fiber port receiver.
Write protection enables or disables the remote card from controlling the locally
managed card. The combination of these functions, along with the line card’s
remote management ability, enable easy deployment of Ethernet WAN services to
customers.
For updating or expanding an existing network, Metrobility offers 100 Mbps access
line cards in various combinations, including fiber optic distance support up to 100
km. All cards are compatible with any Fast Ethernet device.
4
Overview
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The Radiance access line card provides the following key features:
• Remote management using Metrobility’s unique Radiance technology which
enables communication with an unmanaged remote device.
• Complete Remote Monitoring (RMON) Group 1 Ethernet Statistics support.
• Remote link testing capability that does not affect the customer’s available
bandwidth.
• User-selectable maximum burst size and bandwidth allocation.
• Individual port enable/disable.
• Far End Fault functionality to detect a loss of the remote card’s fiber port
receiver.
• Duplex auto-negotiation on the copper port.
• Half and full duplex support on the copper port.
• Write protect to enable or disable a remote line card from controlling a locally
managed card.
• Link Loss Carry Forward (LLCF) and Link Loss Return (LLR) functionality
to aid in troubleshooting.
• Push-button MDI-II/MDI-X switch on the front panel to eliminate the need
for crossover cables on the copper port.
• Fused power on each line card to protect the rest of the cards in the chassis
from a short circuit. The power (PWR) LED on an affected card is not lit if its
fuse is blown.
• Hot swap circuitry.
• Auto-polarity on the copper port.
• Compliance with applicable sections of IEEE 802.3.
• Data frame size transparency.
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5
Installation Guide
Follow the simple steps outlined in this section to install and start using the
Radiance access line cards.
NOTE: Electrostatic discharge precautions should be taken when handling any
line card. Proper grounding is recommended (i.e., wear a wrist strap).
Unpack the Line Cards
Your order has been provided with the safest possible packaging, but
shipping damage does occasionally occur. Inspect your line card(s)
carefully. If you discover any shipping damage, notify your carrier and
follow their instructions for damage and claims. Save the original
shipping carton if return or storage of the cards is necessary.
1
Set the Switches
MDI-II to MDI-X Switch (twisted-pair ports only)
To eliminate the need for crossover cables, the access line card has an
2
MDI-II to MDI-X switch on its twisted-pair port. The switch is located
on the center of the front panel. Use this switch to configure the port for
either a straight-through or crossover connection.
• The parallel symbol (II) indicates a straight-through or parallel
connection. The switch is up. (default)
• The cross symbol (X) indicates a crossover connection. The switch is
down (depressed).
Use the following table as a guide.
A device that is wired straight through needs one crossover connection:
If the cable is
straight through
crossover
the MDI-II to MDI-X switch setting should be
X
II
A device that is wired crossover needs a parallel connection:
If the cable is
straight through
crossover
the MDI-II to MDI-X switch setting should be
II
X
6
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DIP Switches
A bank of six DIP switches is located on the back of the card. Switches
1, 3, 5 and 6 allow you to select from several modes of operation.
These switches are clearly marked on the card’s circuit board. Refer to
the table below for the proper setting of the DIP switches.*
When setting DIP switches, the UP position is when the lever of the
DIP switch is pushed away from the circuit board. The DOWN position
is when the lever is pushed toward to the board.
W N
1 2 3 4 5 6
Switch
Position Function
Label
UP
Link Loss Carry Forward is enabled on the card.
LLCF
AN1
DOWN
(default)
Link Loss Carry Forward is disabled on the card.
The copper port advertises full/half duplex capability to its
link partner. Speed is not auto-negotiated and is always
100Mbps.
UP
DOWN Auto-negotiation is disabled. The copper port is set to full
(default) duplex.
UP
Link Loss Return is enabled on the fiber optic port.
LLR2
DOWN
(default)
Link Loss Return is disabled on the fiber optic port.
Far End Fault (FEF) is enabled. If FEF is enabled on a
remote card and its fiber port loses its receive (RX) link,
the card sends an unsolicited alarm to the locally
managed card.
UP
FEF2
DOWN
(default)
Far End Fault is disabled on the fiber optic port.
* DIP switches can also be managed via console commands or through Metrobility’s NetBeacon or WebBeacon
management software. Refer to the Command Line Interface Reference Guide, NetBeacon Element Management
Software Installation & User Guide or WebBeacon Management Software Installation & User Guide for software
management information.
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7
Link Loss Carry Forward
Link Loss Carry Forward (LLCF) is provided as an aid in troubleshoot-
ing a remote connection. When LLCF is enabled, loss of the receive
signal at the TX port prevents the FX port from transmitting an idle
signal onto the cable. Conversely, if the FX port does not detect a
receive signal, the TX port does not transmit an idle signal.
When LLCF is disabled (default), the card continually transmits idle
signals on both ports.
Warning: If LLCF is enabled on a remote access line card and there is
no link on the card’s copper port, you will NOT be able to manage that
remote card.
Refer to Link Loss Carry Forward for further details.
Auto-Negotiation
Auto-negotiation (AN) is only supported on the copper port. Enable AN
to establish a full duplex connection with another auto-negotiating
device or to force the port to half duplex.
When AN is enabled, the copper port advertises 100Mbps and full/half
duplex capability. The line card cannot auto-negotiate speed, which is
set to 100Mbps.
When AN is disabled (default), the copper port is set to full duplex.
IMPORTANT: The duplex mode of the device connected to the fiber
port must be the same as the copper port’s connection.
Link Loss Return
Link Loss Return (LLR) is only applicable to the fiber optic port. When
LLR is enabled, loss of the receive signal at the port disables its own
transmit link.
When LLR is disabled (default), the fiber port continually transmits an
idle signal.
Refer to Link Loss Return for additional information.
8
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Far End Fault
Far End Fault (FEF) is only applicable to the fiber optic port. FEF
enables the locally managed access line card to detect a break in the
remote card’s fiber port receiver. The remote card sends an alarm to the
locally managed card if the remote card has FEF enabled and it loses its
receive (RX) fiber link. No alarms are issued if FEF is disabled.
Install the Line Card
The Radiance access line card offers the ease of plug-and-play installa-
tion and is hot-swappable. The card must be firmly secured to the
chassis before network connections are made. Follow the simple steps
outlined below to install your line card.
3
NOTE: Proper grounding is recommended (i.e., wear a wrist strap).
Slot for Management Card
Card Guide
10/100
PWR
10/100
PWR
100 BASE
O
C
-
1000BASE
PWR
100 BASE
MAN FD PWR
OC-12
PWR
10/100
10/100
PWR
10/100
PWR
10/100
PWR
OC-12
PWR
OC-12
PWR
OC-12
PWR
MAN FD PWR
PWR
MGT-10
FL
FL
FL
FL
LK
AT
100
FD
RX
1
2
SX
R
X
LK
LK
R
X
LK
RX
LK
TX
RX
LK
TX
RX
LK
TX
RX
R
X
LK
R
X
LK
R
X
LK
RX
RX
T
X
T
T
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
X
X
100 BAS
M
LK
AT
LK
TX
LK
LK
LBK
DIS
MAN FD PW
T
X
T
X
T
X
T
X
T
X
x
II
x
II
LBK
DIS
x
II
x
II
x
II
PWR
LK
LK
LK
LK
LK
LX
R
X
LK
R
X
RX
RX
LK
TX
A
B
RX
LK
TX
RX
LK
TX
R
X
R
X
R
X
T
X
R
X
RX
LK
C
O
N
S
O
L
RX
RX
S
S
M
S
M
M
M
S
M
S
M
S
M
S
M
M
T
X
T
X
LK
LBK
DIS
LK
LBK
DIS
T
X
T
X
T
X
T
X
x
II
T
X
T
X
R
LBK
DIS
E
100
FD
100
FD
FX
FX
FX
FX
ER
R
X
RX
LK
S
M
T
X
LBK
DIS
FX
IMPORTANT!
Tighten thumb screw
Thumb Screw
Card Guide
to secure each card firmly
to chassis before making
network connections.
Blank Panel
• Grasp the card by the front panel as shown.
• Insert the card into a slot in the chassis making sure that the top and
bottom edges of the board are aligned with the top and bottom card
guides in the chassis. Do not force the card into the chassis unneces-
sarily. It should slide in easily and evenly.
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• Slide the card in until the top and bottom edges of the front panel are
flush and even with the top and bottom edges of the chassis.
• To secure the line card to the chassis, turn the thumbscrew clockwise
until it is snug. The card is now properly installed and ready for
connection to the network.
• It is not necessary to install a management card in the remote chassis
containing an access line card. Management of the remote access
line card is provided through the local management card and the
fiber link connecting the two access line cards.
Connect to the Network
To connect the card to the network, insert the cables into the appropri-
ate connectors as illustrated below. Make sure the card is secured to the
chassis before making network connections. Once power is applied to
the unit, correct connectivity can be verified via the link (LK) LED.
4
10/100
PWR
10/100
PWR
100 BASE
MAN FD PWR
100 BA
MAN WR
100 BASE
MAN FD PWR
10/100
P
100 BASE
10/100
100 BASE
MAN FD PWR
100 BASE
PWR
10/100
PWR
10/100
100 BASE
PWR
10/100
PWR
10/100
PWR
100 BASE
MAN FD PWR
MAN FD PWR
MGT-10
FL
FL
FL
LK
AT
100
FD
RX
FD
RX
FD
RX
0
FD
RX
100
FD
RX
1
2
R
X
R
X
RX
LK
TX
RX
LK
TX
LK
RX
LK
TX
K
RX
LK
RX
LK
T
X
T
X
K
T
T
X
T
X
T
T
X
T
T
X
T
X
T
M
M
M
M
M
M
M
M
M
M
X
LK
X
X
X
LK
AT
LK
TX
LK
TX
LK
TX
AT
LK
TX
LK
TX
AT
LBK
DIS
LK
LBK
DIS
T
X
T
X
LBK
DIS
x
II
x
II
x
II
LBK
x
II
x
II
x
II
x
II
x
II
x
II
LBK
DIS
x
II
x
II
LBK
DIS
x
II
x
II
RX
K
PWR
LK
R
X
R
X
R
X
RX
LK
TX
RX
LK
TX
RX
LK
RX
LK
RX
LK
TX
RX
LK
RX
RX
LK
TX
RX
LK
TX
LK
AT
RX
LK
TX
RX
LK
TX
RX
LK
A
B
C
O
N
S
O
L
S
M
M
M
M
M
M
S
M
M
M
M
M
M
M
A
LK
TX
T
X
T
X
T
X
T
X
T
X
R
LBK
LBK
DIS
FX
FX
FX
FX
100
FD
100
FD
CWDM
FX
FX
FX
FX
FX
FX
FX
E
ER
DIS
Twisted-Pair Interface
The twisted-pair port provides a shielded RJ-45 connector that supports
a maximum segment length of 100 meters. Use only Category 5 cables.
Fiber Optic Interface
The fiber optic interface’s receiver is located above its transmitter.
When making network connections, make sure that the fiber receiver of
the card connects to the transmitter of the connected device. Make sure
that the receiver port of the connected device connects to the fiber
transmitter of the line card.
The R231-13 and R231-15 fiber optic multimode interface supports a
maximum segment length of 2 km for remote links.
10
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The singlemode (SM) connector supports a maximum segment length
of 20, 40, 60, or 100 km, depending on the model.
NOTE: To enable remote management, make sure the management
(MAN) LED is ON after connecting the fiber cable to the remote
access line card. If not, reset one of the access line cards via software
or a power cycle of the card.
BWDM Interface
The bidirectional wavelength division multiplexed (BWDM) port
provides one pair of singlemode SC connectors that supports a
maximum segment length of 20 km. BWDM line cards must always be
used in complementary pairs. That is, a -1X model must always be
connected to a -1Y. The -1X cards are designed to transmit data at a
wavelength of 1550 nm and receive at 1310 nm. Correspondingly, the -
1Y cards transmit data at 1310 nm and receive at 1550 nm.
CWDM Interface
The coarse wavelength division multiplexed (CWDM) port provides
one pair of singlemode LC connectors that supports a maximum
segment length of 60 km. The port’s wavelength (in nm) is printed on
the front panel.
Network Connections
R231-13 RJ-45 to FX multimode SC ________________ 100 m/2 km
R231-14 RJ-45 to FX singlemode SC_______________ 100 m/20 km
R231-15 RJ-45 to FX multimode ST ________________ 100 m/2 km
R231-16 RJ-45 to FX singlemode ST _______________ 100 m/20 km
R231-17 RJ-45 to FX singlemode SC_______________ 100 m/40 km
R231-1J RJ-45 to FX singlemode SC ______________ 100 m/100 km
R231-1X RJ-45 to FX singlemode BWDM SC _______ 100 m/20 km
R231-1Y RJ-45 to FX singlemode CWDM SC _______ 100 m/20 km
R231-47 RJ-45 to FX singlemode CWDM LC _______ 100 m/60 km
R231-49 RJ-45 to FX singlemode CWDM LC _______ 100 m/60 km
R231-51 RJ-45 to FX singlemode CWDM LC _______ 100 m/60 km
R231-53 RJ-45 to FX singlemode CWDM LC _______ 100 m/60 km
R231-55 RJ-45 to FX singlemode CWDM LC _______ 100 m/60 km
R231-57 RJ-45 to FX singlemode CWDM LC _______ 100 m/60 km
R231-59 RJ-45 to FX singlemode CWDM LC _______ 100 m/60 km
R231-61 RJ-45 to FX singlemode CWDM LC ________ 100 m/60 km
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11
User Guide
This section contains information about the operating features of the
Radiance access line cards.
LED Indicators
The Radiance access line cards provide several LEDs on the front panel for the
visible verification of unit status and proper functionality. These LEDs can help
with troubleshooting and overall network diagnosis and management. There are
separate receive (RX), link (LK), loopback (LBK) and disable (DIS) indicators
for each port.
The following table describes the indication of each LED when lit.
LED
LED
Label Name
Color (Status)
Indication
MAN
FD
Managed
Green (steady) Unit is receiving management packets.*
Full Duplex Green (steady) Unit is operating at full duplex. When
unlit, the unit is operating at half duplex.
PWR Power
Green (steady) Unit is powered ON.
RX
Receive
Link
Green (blinking) Port is receiving data.
Green (steady) Port has a valid link.
LK
LBK
DIS
Loopback
Disable
Green (steady) Port is in loopback mode.
Green (steady) Port has been disabled by software.
*NOTE: A management card must be installed in the chassis to enable remote management.
Factory Settings
The Radiance access line card provides several user-selectable options to meet
your networking needs. The card’s default settings are listed below.
Default Hardware Switch Settings
MDI-II/MDI-X .................................................................................. Parallel (UP)
The following switches can be overridden through software commands.*
Link Loss Carry Forward ........................................................ Disabled (DOWN)
Auto-Negotiation ..................................................................... Disabled (DOWN)
Link Loss Return ..................................................................... Disabled (DOWN)
Far End Fault ........................................................................... Disabled (DOWN)
* Refer to the Command Line Interface Reference Guide, NetBeacon Element Management Software Installation &
User Guide or WebBeacon Management Software Installation & User Guide for software management information.
12
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Default Software Settings
The following settings can only be changed via software commands.*
Bandwidth Allocation ..............................................................................100Mbps
Maximum Burst Size ....................................................................................... 16K
Loopback Mode ....................................................................................... Disabled
Write Protect ..........................................................................................ReadWrite
Port Enable/Disable ...................................................................................Enabled
Software Settings
Five operational functions on the access line card can be modified only through
software commands,* either locally or remotely. Remote management communi-
cations only occur on the fiber optic segment.
Bandwidth Allocation
This option allows you to specify the amount of incoming and outgoing data that
can be carried over the network. The receive (RX) and transmit (TX) bandwidths
are set through the copper port. The bandwidth can be set in 1Mbps increments
from 1 to 100. Set both the TX and RX bandwidths to the same rate if you want
the input and output bandwidth to be equal. Frames that overrun the allocated
bandwidth are blocked, then dropped.
When you set the RX bandwidth, the allocation is applied to traffic received on
the copper port. When you set the TX bandwidth, the allocation is applied to
traffic transmitted on the copper port.
In addition to the bandwidth allocation, you can maximize performance by
choosing the maximum burst size in each direction.
Maximum Burst Size
To accommodate for the fluctuations that commonly occur in network traffic, the
Radiance access line card provides an option to specify the maximum burst size
permitted in each direction. This allows your customers to have full access to
their channel bandwidth until the burst threshold is reached. At that point the
channel bandwidth is restricted for a period of time, depending on the bandwidth
setting, until more data frames can be accepted. This arrangement benefits the
customer who can take advantage of the channel’s full bandwidth, as long as the
data burst size can be quantified and the burst is followed by a period of inactiv-
ity.
* Refer to the Command Line Interface Reference Guide, NetBeacon Element Management Software Installation &
User Guide or WebBeacon Management Software Installation & User Guide for software management information.
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13
The maximum burst size can be adjusted to one of the following settings:
16, 32, 64, 128 or 256 kilobytes.
Loopback Mode
You can enable loopback on either port on the locally managed card or on the
remote fiber port. The loopback function allows a port to return its incoming
data back to the sender, while continuing to receive and transmit management
packets. The management packets are not looped back to the sender—only the
data packets are returned.
Loopback can only be applied to one port at a time (i.e., both ports on a card can
never be in loopback mode simultaneously). This is because when you enable
loopback on a port, the other port on the card is automatically disabled (no link).
Because you would lose the ability to manage the remote access line card,
loopback cannot be applied to the remote copper port. If a port is in loopback
mode, its LBK LED will be lit.
When loopback is enabled on a port, its incoming data is transmitted through the
entire circuitry of the board, not just the port in loopback mode. This allows the
entire circuit to be tested. RMON statistics are incremented on both ports—even
though the physical interface on the port without loopback is neither transmit-
ting nor receiving traffic.
A full power cycle of the card takes it out of the loopback mode. Removing the
card and reinserting it also takes it out of loopback mode because the loopback
setting is not saved in the software’s persistence data file. Loopback is the only
software switch setting that is not saved in this file.
Typically, the remote card’s fiber port is placed in loopback mode to test the
segment by using any standard packet-generating test equipment.
Write Protect
To prevent the remote access line card from controlling the locally managed
card, set Write Protect to ReadOnly. Set Write Protect to ReadWrite if you want
the remote card to be able to override software settings on the locally managed
access line card.
Port Enable/Disable
Either port on a managed access line card can be enabled or disabled
independently. When a port is disabled, its DIS LED is lit.
14
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Disabling a port stops the data flow to and from that port. Although data is
neither sent nor received, the disabled port continues to accept, process and
transmit management packets. However, if LLCF is enabled and the opposite
port has no link, management packets will not be transmitted.
Remote Management Statistics
Through SNMP management, NetBeacon or WebBeacon, you can view Remote
Monitoring (RMON) and Ethernet statistics for the Radiance access line card.
RMON Statistics
Each port on the card supports the complete RMON Group 1 statistics outlined
in RFC 1757 and listed below.
EtherStatsOctets
EtherStatsPkts
EtherStatsBroadcastPkts
EtherStatsCRCAlignErrors
EtherStatsFragments
EtherStatsMulticastPkts
EtherStatsUndersizePkts
EtherStatsJabbers
EtherStatsCollisions
EtherStatsPkts65to127Octets
EtherStatsPkts256to511Octets
EtherStatsPkts64Octets
EtherStatsPkts128to255Octets
EtherStatsPkts512to1023Octets
EtherStatsPkts1024to1518Octets EtherStatsOversizePkts
Dropped Events
Ethernet Statistics
For the card’s fiber port, you can obtain the Ethernet statistics listed in the table
below. For a copper port, only the Port Link Status is reported.
Statistic Name
Description
Port Link Status
Indicates whether or not the port has a valid link.
Link Transition Counter Number of times link was lost since power-up.
The value is 0 after the card is reset, even without a link.
Management Counter Number of management packets received.
Discovery Count
Number of remote devices discovered on the network.
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Singlemode Fiber Optic Power Monitors
Through software*, you can read the input and output power levels of the
singlemode fiber optic port on the access line cards with diagnostic capabilities.
Input Power Level
The accuracy of the input power monitor is ±1 dBm from -28 dBm to -12 dBm.
The accuracy is ±2 dBm from -31 dBm to -29 dBm. The monitor is
unresponsive below -31dBm. If there are no cables connected to the fiber port,
the software may display a reading of -40 dBm. The access line card peaks at -
12 dBm and reaches saturation at -7 dBm.
The singlemode long haul (R231-17) and extended long haul (R231-1J) ports
are operational down to -34 dBm, which is too low for the monitor to measure.
If the input power level is between -34 dBm and -29 dBm, a valid link will be
established, however, the light level displayed by the software will show a
reading of -40 dBm. This reading is not a failure indication; it simply means the
level is beyond the range of the power monitor.
Input Power Monitor
Accurate
Operational
Model #
Monitoring Trap Thresholds Failure Reading
Range
Range
R231-14
R231-16
-29 to -7dBm -28 to -12dBm -28dBm and -7dBm
-34 to -7dBm -31 to-12dBm -31dBm and -7dBm
-31dBm
-40dBm
R231-17
R231-1J
Output Power Level
The accuracy of the output power monitor is ±3dBm. Failure readings indicate
that the card is non-functional and must be replaced. If there are no cables
connected to the fiber port, the software may display readings that indicate
failure.
Output Power Monitor
Operational
Range
Typical
Reading
Model #
Trap Thresholds Failure Reading
R231-14
R231-16
-15 to -8dBm
-5 to 0dBm
-11dBm
-3dBm
-15dBm and -7dBm -18dBm or -3dBm
R231-17
R231-1J
-6dBm and 0dBm
-9dBm or +3dBm
* Refer to the Command Line Interface Reference Guide, NetBeacon Element Management Software Installation &
User Guide or WebBeacon Management Software Installation & User Guide for software management information.
16
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Link Loss Carry Forward (LLCF)*
The access line cards incorporate an LLCF functionfor troubleshooting a remote
connection. When LLCF is enabled, the ports do not transmit a link signal until
they receive a link signal from the opposite port.
The diagram below shows a typical network configuration with a good link
status using access line cards for remote connectivity. Note that LLCF is enabled
as indicated in the diagram.
Management Switch/Hub
Station w/SNMP
Access
Line Card
Access
Line Card
Customer
Site
LLCF is ON
LLCF is ON
TX
FX
Remote
Cable
TX
LED lit = established link
LED unlit = no link
If the fiber connection breaks, the card carries that link loss forward to the
switch/hub which generates a trap to the management station. The administrator
can then determine the source of the problem.
Management Switch/Hub
Station w/SNMP
Access
Line Card
Access
Line Card
Customer
Site
LLCF is ON
LLCF is ON
TX
Broken
FX Remote
Cable
TX
Link Loss Carried Forward
LED lit = established link LED unlit = no link
Management Switch/Hub
Station w/SNMP
Access
Line Card
Access
Line Card
Customer
Site
LLCF is ON
LLCF is ON
TX
FX
Remote
Cable
Broken
TX
Cable
Link Loss Carried Forward
LED lit = established link
LED unlit = no link
Important: When connecting a line card with LLCF enabled to an auto-
negotiating device, force both sides of the configuration to 100Mbps and either
full or half duplex. This allows the card to immediately see link pulses and start
passing data.
* Cards are shipped with LLCF disabled (OFF).
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Link Loss Return (LLR)
The fiber optic ports of the access line cards have been designed with an LLR
function* for troubleshooting a remote connection.
When LLR is enabled, the fiber port’s transmitter shuts down if its receiver fails
to detect a valid receive link. LLR should only be enabled on one end of the link
and is typically enabled on either the unmanaged or remote device.
The diagram below shows a typical network configuration with a good link
status using access line cards for remote connectivity.
Access
Line Card
Switch/Hub
w/SNMP
Access
Line Card
Customer
Site
PC
LLR is OFF
LLR is ON
Fiber
Cable
LED lit = established link
LED unlit = no link
If one of the optical conductors is bad (as shown in the diagram box below), the
card with LLR enabled will return a no link condition to its link partner. This
aids the network administrator in determining the source of the loss.
Switch/Hub
w/SNMP
Customer
Site
Access
Line Card
Access
Line Card
PC
LLR is OFF
LLR is ON
Broken
Fiber
Conductor
Link Loss Returned
LED unlit = no link
LED lit = established link
IMPORTANT: LLR must not be active on both ends of a configuration. If it is,
the link can never be established.
*Units are shipped with the LLR function disabled (DOWN).
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Topology Solutions
CO/POP
Customer Premises
SNMP Control
Radiance R5000
Configuration Instructions
Status Reporting
Remote Communications Path
Used Bandwidth = 0
Remote Device
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Technical Specifications
Data Rate
Data Rate ____________________ 100Mbps half duplex, 200Mbps full duplex
Bit Delay ____________________________________ 66 bits (fiber to copper)
____________________________________ 51 bits (copper to fiber)
Network Connections
Singlemode F/O Interface (R231-14, R231-16)
Connector ________________________________________________ ST or SC
Wavelength _______________________________________________ 1310 nm
RX Input Sensitivity ________________________________ -29 dBm minimum
Output Power ____________________________________ -15 dBm to -8 dBm
Supported Link Length __________________________ up to 20 km full duplex
Cable Type ___________________________________________ 9/125 µm F/O
Singlemode F/O Interface — long haul distance support (R231-17)
Connector _____________________________________________________ SC
Wavelength _______________________________________________ 1310 nm
RX Input Sensitivity ________________________________ -34 dBm minimum
Output Power ______________________________________ -5 dBm to 0 dBm
Supported Link Length __________________________ up to 40 km full duplex
Cable Type _______________________________________ 9/125 µm SM F/O
Singlemode F/O Interface — extended long haul distance support (R231-1J)
Connector _____________________________________________________ SC
Wavelength _______________________________________________ 1550 nm
RX Input Sensitivity ________________________________ -34 dBm minimum
Output Power ______________________________________ -5 dBm to 0 dBm
Supported Link Length _________________________ up to 100 km full duplex
Cable Type _______________________________________ 9/125 µm SM F/O
Singlemode BWDM F/O Interface (R231-1X, R231-1Y)
Connector _____________________________________________________ SC
Supported Link Length __________________________ up to 20 km full duplex
Cable Type ___________________________________________ 9/125 µm F/O
RX Input Sensitivity ________________________________ -32 dBm minimum
Output Power ___________________________ -15 dBm to -8 dBm (9/125 µm)
(R231-1X)
TX Wavelength ________________________________________ 1550 nm
RX Wavelength ________________________________________ 1310 nm
(R231-1Y)
TX Wavelength ________________________________________ 1310 nm
RX Wavelength ________________________________________ 1550 nm
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Singlemode CWDM F/O Interface (R231-47, -49, -51, -53, -55, -57, -59, -61)
Connector _____________________________________________________LC
Wavelength ________________________________________ (see tables below)
Supported Link Length __________________________ up to 60 km full duplex
Cable Type ___________________________________________ 9/125 µm F/O
RX Input Sensitivity _______________ -25 dBm (typical); -23 dBm (maximum)
Output Power ___________________________ -3 to +2 dBm; -1 dBm (typical)
Model Number Wavelength
Model Number Wavelength
R231-47
R231-49
R231-51
R231-53
1470 nm
1490 nm
1510 nm
1530 nm
R231-55
R231-57
R231-59
R231-61
1550 nm
1570 nm
1590 nm
1610 nm
Multimode F/O Interface (R231-13, R231-15)
Connector ________________________________________________ ST or SC
Wavelength _______________________________________________ 1310 nm
RX Input Sensitivity ________________________________ -31 dBm minimum
Output Power _______________________ -23.5 dBm to -14 dBm (50/125 µm)
_______________________ -20 dBm to -14 dBm (62.5/125 µm)
Supported Link Length ___________________________ up to 2 km full duplex
Cable Type ________________________________ 50/125 or 62.5/125 µm F/O
Twisted-Pair Interface
Connector __________________________________ Shielded RJ-45, 8-pin jack
Impedance________________________________________ 100 Ohms nominal
Signal Level Output (differential) __________________________ .95 to 1.05 V
Signal Level Input _________________________________ 350 mV minimum
Supported Link Length ________________________________________ 100 m
Cable Type _________________________________________ Category 5 UTP
(For NEBS Level III and EN55024:1998 compliance, use only
Category 5 STP cables.)
Power
Input _______________________________________5 V @1.0 A, 5 W average
Environmental
Operating Temperature ____________________________________ 0° to 55° C
Storage Temperature ____________________________________ -30° to 70° C
Operating Humidity _________________________ 5% to 95% non-condensing
Weight_______________________________________________ 5 oz (0.14 kg)
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Product Safety, EMC and Compliance Statements
This equipment complies with the following requirements:
• UL
• CSA
• EN60950 (safety CE)
• FCC Part 15, Class A
• EN55022 Class A (emissions CE)
• EN55024: 1998 (immunity)
• DOC Class A (emissions)
• Class 1 Laser Product
This product shall be handled, stored and disposed of in accordance with all
governing and applicable safety and environmental regulatory agency require-
ments.
The following FCC and Industry Canada compliance information is applicable
to North American customers only.
USA FCC Radio Frequency Interference Statement
This equipment has been tested and found to comply with the limits for a Class
A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed
to provide reasonable protection against harmful interference when the equip-
ment is operated in a commercial environment. This equipment generates, uses
and can radiate radio frequency energy, and if not installed and used in accor-
dance with the instruction manual, may cause harmful interference to radio
communications. Operation of this equipment in a residential area is likely to
cause harmful interference in which case the user will be required to correct the
interference at his own expense.
Caution: Changes or modifications to this equipment not expressly approved by
the party responsible for compliance could void the user’s authority to operate
the equipment.
Canadian Radio Frequency Interference Statement
This Class A digital apparatus meets all requirements of the Canadian Interfer-
ence-Causing Equipment Regulations.
Cet appareil numérique de la classe A respecte toutes les exigences du
Réglement sur le matériel brouilleur du Canada.
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Warranty and Servicing
Three-Year Warranty for the Radiance Access Line Card
Metrobility Optical Systems, Inc. warrants that every Radiance access line card
will be free from defects in material and workmanship for a period of THREE
YEARS from the date of Metrobility shipment. This warranty covers the
original user only and is not transferable. Should the unit fail at any time during
this warranty period, Metrobility will, at its sole discretion, replace, repair, or
refund the purchase price of the product. This warranty is limited to defects in
workmanship and materials and does not cover damage from accident, acts of
God, neglect, contamination, misuse or abnormal conditions of operation or
handling, including overvoltage failures caused by use outside of the product’s
specified rating, or normal wear and tear of mechanical components.
To establish original ownership and provide date of purchase, complete and
return the registration card or register the product online at
www.metrobility.com. If product was not purchased directly from Metrobility,
please provide source, invoice number and date of purchase.
To return a defective product for warranty coverage, contact Metrobility
Customer Service for a return materials authorization (RMA) number. Send the
defective product postage and insurance prepaid to the address provided to you
by the Metrobility Technical Support Representative. Failure to properly protect
the product during shipping may void this warranty. The Metrobility RMA
number must be clearly on the outside of the carton to ensure its acceptance.
Metrobility will pay return transportation for product repaired or replaced in-
warranty. Before making any repair not covered by the warranty, Metrobility
will estimate cost and obtain authorization, then invoice for repair and return
transportation. Metrobility reserves the right to charge for all testing and
shipping costs incurred, if test results determine that the unit is without defect.
This warranty constitutes the buyer’s sole remedy. No other warranties, such as
fitness for a particular purpose, are expressed or implied. Under no circum-
stances will Metrobility be liable for any damages incurred by the use of this
product including, but not limited to, lost profits, lost savings, and incidental or
consequential damages arising from the use of, or inability to use, this product.
Authorized resellers are not authorized to extend any other warranty on
Metrobility’s behalf.
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Product Manuals
The most recent version of this manual is available online at
Product Registration
To register your product, go to
25 Manchester Street, Merrimack, NH 03054 USA
tel: 1.603.880.1833 • fax: 1.603.594.2887
5660-713113 H
2/04
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