| ISDN BRI S/T Port Pinout |
|---|
| RJ-45 8 Pin1 | TE2 | NT3 | Polarity |
|---|---|---|---|
| 3 | Transmit | Receive | + |
| 4 | Receive | Transmit | + |
| 5 | Receive | Transmit | - |
| 6 | Transmit | Receive | - |
1 Pins 1, 2, 7, and 8 are not used.
2 TE refers to terminating layer 1 aspects of TE1, TA, and NT2
functional groups.
3 NT refers to network terminating layer 1 aspects of NT1 and NT2
functional groups.
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