Nortel Networks BCM200, 400 4.0 manual FEM switch settings

Chapter 8 Installing a media bay module (MBM) 133

Table 45 DSM 16+ and DSM32+ double density switch settings (new system) (Sheet 2 of 2)

5	off	on	on	on	off	off	A
	off	on	off	on	off	off	B
6	off	on	on	off	on	on	A
	off	on	off	off	on	on	B
**7	off	on	on	off	on	off	A
	off	on	off	off	on	off	B

317-332

333-348

349-364

365-380

381-396

397-412

A B A B A B

333-348

317-332

365-380

349-364

397-412

381-396

*The extensions listed are based on a three-digit DN with a Start DN of 221. If your system has longer DNs or a different Start DN, enter the range in the blank column.

**If your system is configured with a 3/5 split, you cannot use DS30 7.

FEM switch settings

The DIP switches on the underside of the FEM 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 BCM system. Each port also occupies one full DS30 bus. Therefore, if you have a fully configured, six-module Norstar system to convert, you must turn on all six ports on the FEM, and, therefore, no other module can be installed in the BCM system.

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 46.

For example, if you want to use fiber port 2, turn on DIP switch 2 (DS30 3). After the module is installed, an LED lights beside each active fiber port.

Table 46 shows the switch for each fiber port.

Table 46 FEM switch settings

Choose a port	Set this switch to turn on the port						This DS30 bus is
to turn on							assigned
	1	2	3	4	5	6
1	ON						2
2		ON					3
3			ON				4
4				ON			5
5					ON		6
6						ON	7*

* If your system is configured with a 3/5 split, DS30 7 is not available.

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

BCM200/400 4.0 Installation and Maintenance Guide