4.1.1Two-Wire Cable Connection Via RJ-45
A. The RJ-45 jack on a Model 1065 Series Short Range Modem is prewired for a standard TELCO wiring environment. To be sure you have the right wiring, use the table below as a guide.
RJ-45 SIGNAL
1-------------NC
2-------------GND†
3-------------RCV
4-------------XMT
5-------------XMT
6-------------RCV
7-------------GND
8-------------NC
†Connection to ground is optional
B. Proper wiring of pairs between the two modems is as follows:
SIGNAL | PIN# | COLOR* | COLOR | PIN# | SIGNAL |
XMT | 4 | Green ------------ | Green | 4 | XMT |
XMT | 5 | Red --------------- | Red | 5 | XMT |
*Standard color codes—yours may be different
C. AT&T standard modular color codes:
1 - Blue
2 - Orange
3 - Black
4 - Red
5 - Green
6 - Yellow
7 - Brown
8 - Slate
4.2 FOUR-WIRE INSTALLATION
When communicating over a two twisted pair circuit, the Model 1065 can operate full or half duplex, point-to-point or multipoint. In two pair point-to-point applications, you will need a pair of Model 1065s for each circuit—one at each end of the two pair cable. In two pair multi- point applications you will need three or more Model 1065 units. These can be connected using a star topology, although a daisy chain topolo- gy is usually used.
4.2.1Four-Wire Cable Connection Via RJ-45
A. The RJ-45 jack on a Model 1065 Short Range Modem is prewired for a standard TELCO wiring environment. To be sure you have the right wiring, use the table below as a guide.
RJ-45 SIGNAL
1-------------NC
2-------------GND†
3-------------RCV
4-------------XMT
5-------------XMT
6-------------RCV
7-------------GND
8-------------NC
B. Proper crossing of pairs between the two modems is as fol- lows:
†Connection to ground is optional
SIGNAL | PIN# | COLOR* | COLOR | PIN# | SIGNAL |
GND† | 2 | Orange ---------- | Brown | 7 | GND |
RCV | 3 | Black ------------- | Green | 5 | XMT |
XMT | 4 | Red --------------- | Yellow | 6 | RCV |
XMT | 5 | Green ------------ | Black | 3 | RCV |
RCV | 6 | Yellow ------------ | Red | 4 | XMT |
GND | 7 | Brown ------------ | Orange | 2 | GND |
*Standard color codes—yours may be different
†Connection to ground is optional
