Nortel Networks BCM50 - Manual (Page 109)

Chapter 9 Connecting the cables to the BCM50 system 109
Installation and Maintenance Guide
To connect extensions to DSM16, DSM32, ASM8, 4x16, G4x16, or
G8x16 MBMs
1 Read the warnings in the Wiring warnings on page 105 section.
2 Obtain a 25-pair cable with an RJ-21 connector on one end.
3 Plug the RJ-21 connector of the cable into the RJ-21 connector on the front of the MBM.
Use the upper RJ-21 connector on the G4x16/G8x16 MBMs to connect digital extensions.
4 Select the appropriate option to secure the RJ-21 connector to the MBM:
• If you use a straight RJ-21 connector, use the two supplied screws on the sides of the
connector to secure it.
• If you use a right-angle RJ-21 connector, use the supplied screw on the left side of the
connector to secure the left side of the connector. To secure the right side of the connector,
use the supplied cable tie to fasten the 25-pair cable to the anchor on the MBM.
5 Connect the other end of the cable to the local connecting blocks.
6 If you connect extensions to a DSM32, repeat steps 2 to 5 for the second RJ-21 connector.
7 Select the appropriate option for your system:
• If your BCM50 system has another expansion unit, repeat this procedure if you add more
extensions, or proceed to
Connecting telephone lines to the expansion units on page 107 if
you add telephone lines.
• If your BCM50 system has no other expansion unit, proceed to Connecting the auxiliary
equipment on page 109.
For information about wiring the station MBMs:
• 4x16 wiring charts on page 225
• G4x16 and G8x16 wiring charts on page 229
• DSM16 and DSM32 wiring charts on page 233
• ASM8, ASM8+, and GASM wiring chart on page 237
Connecting the auxiliary equipment
The main unit has connections for an auxiliary ringer, an external paging system, and a music
source.
You can connect this auxiliary equipment through the auxiliary terminal block on the wiring field
card (WFC) or the patch panel. See the procedure
To connect the cables to the wiring field card
(optional) on page 113 or the procedure To connect the cables to the patch panel (optional) on page
113.
For information about connecting auxiliary equipment:
• Connecting an auxiliary ringer on page 110
• Connecting an external paging system on page 110
• Connecting an external music source on page 111