Nortel Networks 400 4.0, BCM200 manual Wiring the FEM, To connect the fiber cables

148Chapter 9 Connecting the cables

Wiring the FEM

A fiber expansion module (FEM) allows you to upgrade from a Norstar system to a BCM system by reusing the Norstar MBMs. The MBMs connect to the FEM using the same fiber cable that connected them to the Norstar fiber expansion card.

Warning: Handling optical fiber cables

If the cable is too long, ensure that it is coiled correctly using the fiber spool. Coil excess fiber cable carefully around the spool provided. Do not bend the cable around any tight corners. Bends in the fiber cable must not be less than 100 mm in diameter. Place the fiber cable spool into a slot at the back of the cable trough in the Norstar MBM.

To connect the fiber cables

1Ensure the BCM system is powered up and functional.

2Connect the fiber cables from the Norstar MBMs to the jacks on the FEM.

Note: The DIP switch settings you chose determine which FEM ports are available. If you enable all six FEM ports, the BCM system has no more DS30 resources available. Therefore, you cannot connect more MBMs to the system.

aConnect the Norstar Line Modules to the FEM beginning at fiber port 1.

bConnect Norstar Extension Modules to the FEM beginning at fiber port 6.

3Change the DN records in Element Manager or change the set wiring, as required, to match your system.

Warning: When you connect a Norstar station MBM to an FEM, the extension numbers of the telephones connected to the station MBM may change. To keep the same extension numbers, you must change the DNs of the telephones or change the telephone wiring to correspond with the required DNs.

Note: If you connect a Norstar station MBM amphenol cable directly to a DSM, you do not have to modify the wiring connections. Ensure you select the correct DS30 number.

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