Isdn Bri Interfaces; Connecting To Bri Lines; Figure 5-12: Rj-45 Connector Pinouts For Bri Ports; Figure 5-13: Cabling Bri Ports - AudioCodes Mediant 800 Hardware Installation Manual

Hardware Installation Manual
5.5

ISDN BRI Interfaces

5.5.1

Connecting to BRI Lines

The device provides up to four BRI S/T ports. These ports connect to ISDN terminal
equipment such as ISDN telephones. Each BRI port can be configured either as termination
equipment/user side (TE) or network termination/network side (NT). Up to eight terminal
equipment (TE) devices can be connected per BRI S/T port, using an ISDN S-bus that
provides eight ISDN ports. When configured as NT, the BRI port drives a nominal voltage of
38 V with limited current supply of up to 100 mA.
The connector pinouts for the BRI port when configured as TE or NT are shown below:
Warning:
Note: BRI cabling is applicable only if the device is ordered with BRI interfaces.

To connect the BRI ports:
1. Connect the BRI cable to the device's BRI RJ-45 port.
2. Connect the other end of the cable to your ISDN telephone or PBX/PSTN switch.
Version 6.6

Figure 5-12: RJ-45 Connector Pinouts for BRI Ports

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

Figure 5-13: Cabling BRI Ports

31
5. Cabling the Device
February 2013