Installation Manual
22
Document #: LTRT-83505
Mediant
1000
2.4.5
Connecting to ISDN BRI Lines
The device can house up to five BRI modules, each supporting four BRI ports, thereby
providing a total of up to 20 BRI ports.
Note:
BRI interface is applicable only to devices running the SIP protocol.
Warning:
To protect against electrical shock and fire, use a 26 AWG min wire to
connect the BRI ports to the PSTN.
¾
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.
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 detailed in the following figure:
Figure
2-10: RJ-45 Connector Pinouts for BRI 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 voltage is of Power Source 1 type (line voltage). Power Source
2 is optional.
2.4.6
Connecting to E1/T1 Trunks
The procedure below describes the cabling of the device's TRUNKS module interfaces (i.e.,
E1/T1 trunks).
Warning:
To protect against electrical shock and fire, use a 26 AWG min wire to
connect T1 or E1 ports to the PSTN.
¾
To connect the digital trunk interfaces:
1.
Connect the E1/T1 trunk cables to the ports on the device's
TRUNKS
module(s).
2.
Connect the other ends of the trunk cables to your PBX/PSTN switch.
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