PRI/BRI Trunk Port Pinout
A straight RJ45 cable is used to connect from IP Office BRI/PRI trunk ports to the line providers network termination equipment. If that equipment does not use RJ45 sockets, the cable may need to be stripped and rewired or an alternate cable used. The appropriate signal pin-outs and wire colours are detailed below.
| IP Office | |||
|---|---|---|---|
| RJ45 Pin # |
Colour (T-568B) |
BRI | PRI |
| Signal | Signal | ||
| 1 |  |
- |  RX-A |
| 2 |  |
- | RX-B |
| 3 |  |
 TX-A |
- |
| 4 |  |
RX-A |
TX-A |
| 5 |  |
RX-B |
TX-B |
| 6 |  |
TX-B |
- |
| 7 |  |
- | - |
| 8 |  |
- | - |
→
| Network Termination | ||
|---|---|---|
| RJ45 Pin # | Colour (T-568B) | Wire |
| T-568B | ||
| 1 | |
White/Orange |
| 2 | |
Orange/White |
| 3 | |
White/Green |
| 4 | |
Blue/White |
| 5 | |
White/Blue |
| 6 | |
Green/White |
| 7 | |
White/Brown |
| 8 | |
Brown/White |
PRI/BRI Daughter Card LED status
| PRI Trunk |
 = No trunk present
 = Trunk present
 = Trunk in use
Red/Green Fast Flash (port 9) or Green Fast Flash (port 10) = Alarm indication signal from remote end Red/Green Blink (port 9) or Green Blink (port 10) = Port in loopback mode (set through System Monitor) |
|---|---|
| BRI Trunk |
= No trunk present
= Trunk present
= Trunk in use
|