Avaya BCM 2.0 Programming Guide de l'utilisateur Page 295

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Maintenance 295
P0911588 Issue 01 Enterprise Edge 2.0 Programming Operations Guide
Payload loopback test
The payload loopback test loops the received information bits (192 per frame) back
to the network. You can also remotely invoke and stop the payload loopback test
through the facility data link (FDL) in extended super frame (ESF) format.
The payload loopback test must be run in coordination with the T1 service provider.
Some test patterns can cause the EE-DTM to reset. To avoid this, start the payload
loopback test from your system before the T1 service provider begins their test, and
stop the payload loopback test from your system after the T1 service provider ends
their test.
Card loopback test
The card edge loopback test loops the outgoing signal on the EE-DTM back to its
internal received signal path. The system disconnects signal paths to the external
network.
Continuity loopback test
The continuity loopback test shorts the tip and ring pair of the receive signal path
with the transmit signal path. This test allows you to check the metallic continuity
of the external wiring.
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