User`s guide

Section 360−381−C02
9
4.4 Loopback Test for T1
Use the Loopback test to troubleshoot T1 line problems. Be aware that service will be affected by these tests.
Step Action
1. Select the loopback state, location and type
2. To run the loopback, select Apply New Settings.
Note: T1 loopbacks will not function if the ICB is in alarm.
Near
Line
Figure 8. T1 Loopback Test menu
Menu Item Option Use to...
Loopback State Test Loopback Start loopback
Release Loopback Stop loopback
Loopback Location Near Loop local channels and send AIS to remote ICB
Far Loop T1 at remote ICB toward near ICB
Loopback Type Line Loop T1 (24 channels and overhead)
(available in ESF mode only)
Payload
(not available for Near)
Loop T1 (24 DS0 only)
Apply New Settings Save the new parameter settings
Quit Quit without saving
Note: Far line loopbacks will block far end ICB remote management.
4.5 Performance Monitor
The performance monitor displays a history of the line performance. Historical data is available by quarters
(15-minute intervals, up to 96 quarters or 24 hours) and days (up to 30 days).