Installation guide

A-86 Cisco 4000 Series Installation Guide

BRI Pinouts

The BRI interface port pinouts are shown in Table A-35.

Table A-35 BRI Port Pinouts (RJ-45)

Caution

To prevent damage to the system, make certain you connect the BRI cable to the

BRI connector only and not to any other RJ-45 connector.

1. Pins 1, 2, 7, and 8 are not used.

2. TE refers to terminal 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.

5 TX–

6 +RX

7 Ground

8 Ground

9 +TX

8 Pin

Polarity

3 Transmit Receive +

4 Receive Transmit +

5 Receive Transmit –

6 Transmit Receive –

Table A-34 Dual-Port Token Ring Pinouts (DB-9 Connector)

(Continued)

9-Pi

n Signal Name