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7. Operation and Maintenance
7-72
September 2002 9128-A2-GB20-80
ISDN DBM Operation
The following sections only apply to units with an ISDN DBM:
Forcing Backup (Disruptive)
Placing a Test Call (Nondisruptive)
Verifying ISDN Lines
Verifying That Backup Can Take Place
Forcing Backup (Disruptive)
Use this procedure to force backup when network maintenance is planned, when
equipment problems are reported, or when testing the backup path – whenever
data needs to be forced from the primary destination interface to the alternate
destination, typically from the T1 network to the ISDN.
Procedure
1. Make sure the ISDN Link Profiles are set up correctly, Auto Backup is enabled,
and the ISDN interface is enabled (see
Setting Up Dial Backup
in Chapter 4,
Configuration Options
).
2. Have someone at the far end disconnect the network cable to initiate backup.
3. Verify that backup is taking place.
See
Verifying That Backup Can Take Place
on page 7-74
.
NOTE:
When an alarm requiring backup is received, backup can be manually
controlled by enabling or disabling the Auto Backup option (see Step 2).
4. Have the far-end network cable reconnected to return to standard operation.