Connect Telephone Lines To The Bcm50 Expansion Units; Dtm, Ddim, Brim, And 4X16 - Nortel BCM50 Installation And Maintenance Manual

• If your BCM50 system has a BCM50 Expansion Unit, proceed to
lines to the BCM50 Expansion Units" on page 123
Expansion Units" on page
• If your BCM50 system does not have a BCM50 Expansion Unit, proceed to
the auxiliary equipment" on page
Refer to the "Telephony connector wiring chart" on page 223
wiring the telephony connector.

Connect telephone lines to the BCM50 Expansion Units

Telephone lines connect to the BCM50 Expansion Unit through the connectors on the media bay
module (MBM) installed in the BCM50 Expansion Unit.

DTM, DDIM, BRIM, and 4X16

To connect telephone lines to DTM, DDIM, BRIM, or 4X16 MBMs:
1
Read the warnings in the
2
Obtain a telephone cable that has a modular plug that matches the MBM to which you are
connecting:
• RJ-48C — for DTM or DDIM
• RJ-45 — for BRIM
• RJ-11 — for 4X16
3 Plug the modular cable into the jack in the front of the MBM.
4 Connect the other end of the cable to the telephone company demarcation blocks of the
building.
Warning: For digital telephone lines connected to a DTM media bay module.
If you are using a service provider channel service unit (CSU), you must disable the
BCM50 system internal CSU using Element Manager.
5 If you are connecting telephone lines to a 4X16 or BRIM, repeat steps 2 to 4 for each line you
are connecting.
Warning: The BRIM must only be connected to an NT1 provided by the service
provider. The NT1 must provide a Telecommunication Network Voltage (TNV) to
Safety Extra Low Voltage (SELV) barrier.
Note: Do not attempt to plug digital equipment into the auxiliary (AUX) jacks on the
front of 4X16 media bay modules (MBM).
6
Select the appropriate option for your system:
125.
125.
"Wiring warnings" on page 121
Connecting the lines and extensions
"Connect telephone
or "Connect extensions to the BCM50
for detailed information about
section.
Connect the cables to the BCM50 system
123
"Connecting