Paradyne 9128-II, CSU, DSU, 9126-II manual Isdn DBM Operation, Forcing Backup Disruptive

7. Operation and Maintenance

ISDN DBM Operation

he following sections only apply to units with an ISDN DBM:

Forcing Backup (Disruptive)

Placing a Test Call (Nondisruptive)

TVerifying 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.

7-72 September 2002 9128-A2-GB20-80