RJ-11
SIGNAL
RJ-45
SIGNAL
1 ----------------GND
†
1 ----------------N/C
2 ----------------RCV-
2 ----------------GND
†
3 ----------------XMT+
3 ----------------RCV-
4 ----------------XMT-
4 ----------------XMT+
5 ----------------RCV+
5 ----------------XMT-
6 ----------------GND
†
6 ----------------RCV+
7 ----------------GND
†
8 ----------------N/C
When connecting two Model 1017s, 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 1017s
use a 4-wire R-11 connector. Similar logic should be followed when
using an RJ-45 connector or a combination of the two.
SIGNAL
PIN# COLOR
‡
COLOR
PIN#
SIGNAL
GND
†
1
Blue --------------------White
6
GND
†
RCV-
2
Yellow ------------------Red
4
XMT-
XMT+
3
Green ------------------Black
5
RCV+
XMT-
4
Red ---------------------Yellow
2
RCV-
RCV+
5
Black -------------------Green
3
XMT+
GND
†
6
White -------------------Blue
1
GND
†
†
Connection to ground is optional
‡
Standard color codes—yours may be different
3.2 CONNECTION TO THE MAC PHONE PORT
The Model 1017 should be connected to your Mac through the
1 foot extension cable. Simply plug one end of the cable into the
Model 1017 and the other end directly into the phone (serial) port of
your Mac. The pin-outs are listed below.
Serial Port Pinout (RJ-45)
1 = N/C
2 = HSKi (Handshake In)
3 = HSKo (Handshake Out)
4 = Ground
5 = RD- (Receive Data-)
6 = TD- (Transmit Data-)
7 = N/C
8 = N/C
3.0 INSTALLATION
The Model 1017 is easy to install. This section tells you how to
properly connect the Model 1017 to the twisted pair interface and Mac
phone port, and how to operate the Model 1017.
3.1 CONNECTION TO THE TWISTED PAIR INTERFACE
The Model 1017 supports data-only communication between a
Mac and another Mac or another serial device. There are two require-
ments for installation:
1. These units work in pairs. You must have one Model 1017 (or a
compatible model) at each end of the two twisted pair cable.
2. To function properly, the Model 1017'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.
For your convenience, the Model 1017 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
The Model 1017'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
4
1 - Blue
2 - Orange
3 - Black
4 - Red
5 - Green
6 - Yellow
7 - Brown
8 - Slate
1 - Blue
2 - Yellow
3 - Green
4 - Red
5 - Black
6 - White
Figure 1. AT&T standard modular color codes
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