Payload Loopback - Paradyne 7123 User Manual

6. Troubleshooting

Payload Loopback

The local Payload Loopback (PLB) loops the information received on the selected
interface back to the network after it has passed through the receive and transmit
framing section of the device. Use the PLB to determine whether the problem is
with the T1 facility or in the circuitry of the remote device.
A PLB cannot be started when one of the following tests is active:
T
T
6-14
Main Menu Test Network Physical Tests
Other
All
T1
1s
Interface
Line Loopback, Repeater Loopback, Send Remote Line Loopback, or an
active Monitor Pattern on this network interface.
Send Pattern test on this network interface.
September 2001
Framer
The T1
PLB
Interface
97-15337
7123-A2-GB20-00