AudioCodes Mediant 1000B - ISDN BRI Interfaces; Connecting to BRI Lines; Figure 5-14: RJ-45 Connector Pinouts for BRI

Mediant 1000B Gateway & E-SBC
Hardware Installation Manual 52 Document #: LTRT-41441
5.4 ISDN BRI Interfaces
This section describes the cabling procedures for BRI interfaces.
5.4.1 Connecting to BRI Lines
The procedure below describes how to connect to BRI lines.
Warning: 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.
Note: The BRI module is a customer ordered 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:
Figure 5-14: 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.