Nortel Networks BCM1000 manual FEM switch settings

106Chapter 7 Setting media bay module DIP switches

FEM switch settings

The DIP switches on the underside of the FEM module are used to turn the six ports on the front of the module on or off. You need to turn a port on for each Norstar expansion module you want to connect to the BCM1000. Each port also occupies one full DS30 bus. Therefore, if you have a fully-configured, six-module Norstar system to convert, you need to turn on all six ports on the FEM, and, therefore, no other module can be installed in the BCM1000.

Note: The FEM module only supports connections to the Norstar trunk and station expansion modules.

To turn on a fiber port, set the DIP switch for the corresponding DS30 bus, as shown in Table 27.

For example, if you want to use fiber port 2, turn on DIP switch 2 (DS30 03). After the module is installed, an LED lights beside each active fiber port.

Table 27 shows the switch for each fiber port.

Table 27 FEM switch settings

Choose a port	Set this switch to turn on the port						This DS30 bus
to turn on							gets assigned
	1	2	3	4	5	6
1	ON						02
2		ON					03
3			ON				04
4				ON			05
5					ON		06
6						ON	071

1 If your system is configured with a 3/5 DS30 split, DS30 07 is not available.

Note: If you turn on all six switches, you are using all the DS30 bus blocks. In this case, the BCM1000 can support only the FEM module. All other media bays must be empty.

Warning: Do not attempt to turn on ports requiring a DS30 bus that is already in service to another media bay module located on the same BCM1000. Doing this results in unpredictable behavior with both modules.

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