Connecting to BRI Lines

The procedure below describes how to connect to BRI lines.

To protect against electrical shock and fire, use a 26 AWG min. wire to connect the BRI ports to the PSTN.

Avertissements: Pour vous protéger contre l’électrocution et le feu, utilisez un fil de 26 AWG au minimum pour connecter le port BRI au PSTN.

The BRI module is a separate orderable item. This section is applicable only if your device is installed with such a module.

Cabling specifications:

Cable: 26 AWG min.
Connector: RJ-45
Connector Pinouts: A BRI port can be configured either as TE (Termination Equipment/user side) or NT (Network Termination/network side). The connector pinouts vary according to the configuration, as shown below:

RJ-45 Connector Pinouts for BRI

When configured as NT, the BRI port drives a nominal voltage of 38 V with limited current supply of up to 100 mA. The voltage is of Power Source 1 type (line voltage). Power Source 2 is optional.

To connect to BRI lines:
1. Connect the RJ-45 connector on one end of the cable to the port on the device's BRI module.
2. Connect the other end of the cable to your ISDN telephone or PBX/PSTN switch.