Filter
Top Products
344 Telephony Hardware Selection and Settings
P0993133 03
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 Business Communications Manager. Each port also occupies one full DS30
channel. 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
Business Communications Manager.
To turn on a fiber port, set the DIP switch for the corresponding DS30 bus, as shown in Table 67.
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 67 shows the switch for each fiber port.
Note: The FEM module only supports connections to the Norstar trunk and station
expansion modules.
Table 67 FEM switch settings
Choose a port
to turn on
Set this switch to turn on the port
This DS30 bus gets
assigned
123456
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 channel 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
Business Communications Manager 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 Business Communications Manager.
Doing this results in unpredictable behavior with both modules.