Avaya BCM50 User Manual download pdf (Page 29)

Chapter 3 Hardware installation 29

Installation Checklist and Quick Start Guide

The table BRI port wiring on page 29 and the table BRI line numbering on page 29 list the wiring

details for the RJ-45 ports.

MBM wiring

Telephone lines connect to the expansion unit through the connectors on the MBM.

For more information, see the chapter “Connecting the cables to the BCM50 system” in the

Installation and Maintenance Guide.

Table 13 BRI port wiring

Pin Signal Signal on system side

1 No connection No connection

2 No connection No connection

3 + Receive (+Rx) +Tx

4 + Transmit (+Tx) +Rx

5 –Transmit (-Tx) –Rx

6 –Receive (-Rx) –Tx

7 No connection No connection

8 No connection No connection

Table 14 BRI line numbering

Port number

Default line numbers on

Expansion port 1

Default line numbers on

Expansion port 2

1 065–066 095–096

2 067–068 097–098

3 069–070 099–100

4 071–072 101–102

Warning: Electrical shock warning

The MBMs were safety approved for installation into the expansion unit. The installer and

user are responsible for ensuring that installation of the hardware does not compromise

existing safety approvals.

BEFORE YOU OPEN the main unit or expansion unit, unplug the network

telecommunication cables and disconnect the unit from the ac power source.

Station modules: Connect the ports on these modules only to approved digital telephones

and peripherals with the proper cables on a protected internal wiring system.

Do not connect any telephones to wiring that runs outside the building.

Read and follow the installation instructions carefully.

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Avaya BCM50 User Manual Page 29