USER
MANUAL
MODEL 1007 and
1007S
Mac Short Range Modem
SALES OFFICE
(301) 975-1000
TECHNICAL SUPPORT
(301) 975-1007
Part# 07M1007-A
Doc# 082012UA
Revised 3/24/94
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3.0 INSTALLATION
RJ-11
SIGNAL
RJ-45
SIGNAL
The Model 1007 is easy to install. This section tells you how to
properly connect the Model 1007 to the twisted pair interface and Mac
phone port, and how to operate the Model 1007.
1----------------GND†
2----------------RCV-
3----------------XMT+
4----------------XMT-
5----------------RCV+
6----------------GND†
1----------------N/C
2----------------GND†
3----------------RCV-
4----------------XMT+
5----------------XMT-
6----------------RCV+
7----------------GND†
8----------------N/C
3.1 CONNECTION TO THE TWISTED PAIR INTERFACE
The Model 1007 supports data-only communication between a
Mac and another serial device. There are two requirements for instal-
lation:
When connecting two Model 1007s, it is necessary to use a
“crossover” cable. The diagram below shows how a crossover cable
should be constructed for an environment where both Model 1007s
use a 4-wire RJ-11 connector. Similar logic should be followed when
using an RJ-45 connector or a combination of the two.
1. These units work in pairs. You must have one Model 1007 (or a
compatible model) at each end of the two twisted pair cable.
2. To function properly, the Model 1007's modular jacks must be con-
nected to two twisted pairs of metallic wire. The pairs must be
unconditioned, dry metallic wire, between 19 and 26 AWG (the
higher number gauges may limit distance). Standard dial-up tele-
phone circuits, or leased circuits that run through signal equaliza-
tion equipment are not acceptable.
SIGNAL PIN# COLOR‡
COLOR
PIN# SIGNAL
GND†
RCV-
XMT+
XMT-
RCV+
GND†
1
2
3
4
5
6
Blue --------------------White
6
4
5
2
3
1
GND†
XMT-
RCV+
RCV-
XMT+
GND†
Yellow------------------Red
Green ------------------Black
Red---------------------Yellow
Black -------------------Green
White-------------------Blue
For your convenience, the Model 1007 is available with two differ-
ent twisted pair interfaces: an RJ-11 jack or an RJ-45 jack.
3.1.1 TWISTED PAIR CONNECTION USING RJ-11 OR RJ-45
†Connection to ground is optional
‡Standard color codes—yours may be different
The Model 1007's RJ-11 and RJ-45 connectors on the twisted pair
interface are pre-wired for a standard TELCO wiring environment (see
Figure 1). The table on the following page describes the signal/pin
relationships.
3.2 CONNECTION TO THE MAC PHONE PORT
The Model 1007 should be connected to your Mac through the
1 foot extension cable. Simply plug one end of the cable into the
Model 1007 and the other end directly into the phone (serial) port of
your Mac. The pin-outs are listed below.
1 - Blue
1 - Blue
2 - Orange
2 - Yellow
3 - Green
4 - Red
3 - Black
4 - Red
5 - Green
6 - Yellow
7 - Brown
8 - Slate
Serial Port Pinout (RJ-45)
5 - Black
6 - White
1
2
3
4
5
6
7
8
=
=
=
=
=
=
=
=
N/C
HSKi (Handshake In)
HSKo (Handshake Out)
Ground
RD- (Receive Data -)
TD- (Transmit Data -)
N/C
Figure 1. AT&T standard modular color codes
N/C
3
4
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APPENDIX A
Mini Din 8 to RJ-45 Cable
Din 8 RJ-45
SPECIFICATIONS
Signal
Transmission Format: Asynchronous
1---------------3 --------------HSKo (Handshake Out)
2---------------2 --------------HSKi (Handshake In)
3---------------6 --------------TD (Transmit Data)
4---------------4 --------------Gnd (Ground)
5---------------5 --------------RD (Receive Data)
6---------------4 --------------TD+† (Transmit Data)
7 -------------N/C-------------GPi
Data Rate: 0 to 19,200 bps
Surge Protection: 600W power dissipation at 1 mS and response
time of 1.0 pS (Model 1007S only)
Distance: See below
8 -------------N/C-------------RD+ (Receive Data)
Control Signal: The single Mac control line, Handshake In, turns
on when the modem is connected
†TD+ is connected to ground
Distance: See table below
3.3 OPERATING THE MODEL 1007
Transmit Line: 4 wire, unconditioned line (2 twisted pairs)
Transmit Mode: Full duplex, 4-wire
Transmit Level: 0 dBm
Once the Model 1007 is properly installed, it should operate trans-
parently—as if it were a standard cable connection. Operating power
is derived from the Mac's data and control signals; there is no
“ON/OFF” switch.
Line Connection: RJ-11, RJ-45
Power Supply: None required, uses ultra low power from data and
control signals
Size: 2.0” x 1.7” x 0.8”
Distance Table (miles)
Wire Gauge
Data Rate
19
6.2
7.5
8.7
11.8
17.0
24
3.7
4.9
5.6
8.0
26
1.2
2.5
3.7
4.9
8.0
19,200
9,600
4,800
2,400
1,200
11.8
5
6
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APPENDIX B
BLOCK DIAGRAM
7
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