Nortel BCM50 Troubleshooting Manual

Also see for BCM50: Configuration guide Installation and maintenance guide Keycode Installation Guide Integration guide Installation and configuration guide

Contents

28 Chapter 3 Hardware TroubleshootingNN40020-700NN40020-700• To test a trunk MBM on page 30• To determine why an MBM does not appear in Element Manager on page 30• To determine why the ATA 2 does not function on page 31• To determine why there is no dial tone at the ATA2 on page 31• To check the ATA2 wiring on page 31• Reset to factory settings on page 31• To perform a Level 1 and Level 2 reset on page 33To test the main unitIf you have the digital station feature included in your installed keycode, use the following test toensure 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 supportsextensions, 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 withan extension that can access one of the lines connected to the expansion unit.To troubleshoot the main unitIf 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 properlyseated 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 thelines or extensions that failed the call test.6 If the programming is incorrect, use the Backup and Restore Utility to load a recent backup ofsystem programming. If a recent backup is not available, correct the programming usingElement Manager or the Telephone Administration feature.