Troubleshooting

Line Loopback

The local Line Loopback (LLB) loops the information received on the selected interface back to the source of the loopback. When used with a pattern test at the remote node, LLB determines whether the problem is with the sending device or the T1 facility.

Main Menu Test Network Physical Tests

Other

All

T1

Interface

1s

 

Framer

LLB

The T1

Interface

 

97-15336

CAUTION:

This test may affect the operation of the frame relay PVCs assigned to the selected port. While in loopback, the frame relay link will be down so any IP data being sent while this test is active will be disrupted.

An LLB cannot be started when one of the following tests is active:

HPayload Loopback, Send Remote Line Loopback, or an active Monitor Pattern on this network interface.

HSend Pattern test on this network interface.

9123-A2-GB20-10

July 2000

6-21

Page 173
Image 173
Paradyne 9123 manual Line Loopback, Main Menu → Test → Network Physical Tests