Avaya BCM50 Installation Manual download pdf (Page 112)

112 Chapter 9 Connecting the cables to the BCM50 system

NN40020-302

• If your BCM50 system has no other expansion unit, proceed to Connecting the auxiliary

equipment on page 113.

To connect analog telephone lines to the GATM4/GATM8 or

G4x16/G8x16

1 Read the warnings in Wiring warnings on page 109.

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 lower RJ-21 connector on the G4x16/G8x16 MBMs to connect analog lines.

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 telephone company demarcation blocks of the

building.

6 Select the appropriate option for your system:

• If your BCM50 system has another expansion unit, repeat this procedure if you add more

telephone lines, or proceed to Connecting extensions to the expansion units on page 112 if

you add extensions.

• If your BCM50 system has no other expansion unit, proceed to Connecting the auxiliary

equipment on page 113.

For information about wiring the trunk MBMs:

• DTM wiring chart on page 219

• BRIM wiring chart on page 221

• GATM wiring chart on page 225

• 4x16 wiring charts on page 271

• G4x16 and G8x16 wiring charts on page 275

Connecting extensions to the expansion units

Extensions connect to the expansion unit through the connectors on the MBM installed in the

expansion unit.

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Avaya BCM50 Installation Manual Page 112