To Test The Main Unit; To Troubleshoot The Main Unit - Nortel BCM50 Troubleshooting Manual

28 Chapter 3 Hardware Troubleshooting
• To test a trunk MBM
• To determine why an MBM does not appear in Element Manager
• To determine why the ATA 2 does not function
• To determine why there is no dial tone at the ATA2
• To check the ATA2 wiring
• Reset to factory settings
• To perform a Level 1 and Level 2 reset

To test the main unit

If you have the digital station feature included in your installed keycode, use the following test to
ensure the main unit is operating properly:
1 Go to an extension that is connected to the RJ-21 telephony connector on the main unit.
2
Check for a dial tone.
3 Use this extension to make a call to another extension on the system.
4 If this system has an expansion unit with a media bay module (MBM) that supports
extensions, repeat steps 3 and 4 for an extension connected to the expansion unit.
5 Go to an extension that has access to one of the lines on the main unit.
6 Select the line or line pool to which the line belongs.
7
Check for a dial tone.
8 Make a call using the line or line pool.
9 If this system has an expansion unit with an MBM that supports lines, repeat steps 6 to 8 with
an extension that can access one of the lines connected to the expansion unit.

To troubleshoot the main unit

If a test fails, use the following procedure:
1 Verify that any nonfunctional feature is included in your installed keycode.
2
Check the wiring to the main unit and to the MBMs. Make sure that the cables are properly
seated and are connected to the correct ports.
3 Reboot the BCM50 system.
4
Check LEDs.
5 Use Element Manager or the Telset Administration feature to check the programming for the
lines or extensions that failed the call test.
6
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.
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