Nortel Networks 400 4.0 manual BCM system does not function, Emergency telephone does not function

226Chapter 19 System monitoring and troubleshooting

Monitor disk mirroring progress in tandem with the RAID LED status indicators.

Note: The mirroring process can take up to 3 hours to complete. The BCM system continues to operate normally during the disk mirroring process. However, because disk mirroring occupies computing resources, Nortel recommends that you perform disk mirroring during a period of low call traffic.

Nortel recommends that you perform any system reboot only as required and at the beginning of the disk mirroring process.

To monitor disk mirroring

1Open Element Manager after system boot-up is complete.

2From the Administration tab, click System Status, and then click Disk Mirroring. The Disk Mirroring screen displays (see Figure 103).

3Select Reports and click Drive Status.

The progress indicator shows the current state of the mirroring process.

BCM system does not function

The BCM system can experience a complete failure for any of the following reasons:

•Power supply failure

•Incorrect power supply connections

•AC power failure

Emergency telephone does not function

If the emergency telephone is connected to the system, refer to “To troubleshoot the emergency telephone on the system” on page 226.

If the emergency telephone is connected to the CTM, refer to “To troubleshoot the emergency telephone connected to a CTM” on page 227.

To troubleshoot the emergency telephone on the system

1Check the power LED on the ASM8 to check that the ASM8 is receiving power.

2Check that the emergency telephone has dial tone.

3Check the external line and emergency telephone connections.

4To avoid damage to the emergency telephone, connect the telephone directly to the external line and check for dial tone.

5Replace the MSC.

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