To Troubleshoot The Expansion Unit; To Test The Mbm; To Test A Station Mbm - Nortel BCM50 Installation And Maintenance Manual

9 Make a call using the line or line pool.

To troubleshoot the expansion unit

1 Check that the correct keycode has been entered for the expansion unit.
2
Check that the expansion port is connected to the proper connector. Refer to
98 and Figure 43 on page 99
3 Check the wiring to the MBM. Make sure that the cables are properly seated and are connected
to the correct ports with proper LED indications.
4 Check that the switches on the MBM are all set to on. Refer to
module switch settings" on page 93
If the MBM is a GASM or GATM, all the switches on the right are not set to on. Refer to
"Verifying the media bay module switch settings" on page 93
these switches.
To check the MBM switches, you must remove the MBM from the expansion unit. Refer to
"Replacing a media bay module" on page 179
5 Perform a firmware download to ensure that the correct version is loaded on the ASM/GASM
or GATM unit.
6
Use Element Manager or the Telephone Administration feature to check the programming for
the lines or extensions that are connected to the MBM.
7
Reboot the system to ensure that the BCM50 main unit is functioning correctly.
8 If the programming is incorrect, use the Backup and Restore Utility to load a recent backup of
system programming. If a recent backup is not available, correct the programming using
Element Manager or the Telephone Administration feature.

To test the MBM

1 Check the Power and Status LEDs on the MBM. Both LEDs should be lit solid and green. If
either LED is not lit solid and green, there is a problem with the MBM. Refer to
module LEDs (expansion units only)" on page 64
2 Perform a call test to make sure the new MBM is operating correctly. If you replaced a station
MBM, use "To test a station
MBM" on page 162. If you replaced a 4x16 MBM, use
a trunk MBM" on page

To test a station MBM

1 Go to an extension on the MBM.
2 Check for dial tone.
3
Use this extension to make a call to another extension on the system.
4 Use this extension to make a call to an external telephone number.
Chapter 18 Testing basic BCM50 functionality
for location of the LAN ports.
for more information about these switches.
MBM". If you replaced a trunk MBM, use
162.
"Verifying the media bay
for information about setting
for instructions.
for a detailed description of the LED states.
"To test a station MBM"
BCM50 Installation and Maintenance Guide
161
Figure 42 on page
"Media bay
"To test a trunk
and "To test