Remote Loopback; Figure O-3. Remote Loopback Diagram - ADTRAN Total Access 5000 Deployment Manual
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Total Access 5000 Business Services Deployment Guide
Remote Loopback
A remote loopback transmits a Far End Loop‐up code via the FEAC channel in the DS3
module to the NetVanta 873, which responds by setting‐up a line loopback towards the DS3
card in the Total Access 5000. After the NetVanta 873 DS3 port is looped‐up, Bit Error Rate
Test (BERT) patterns can be sent from the DS3 card to test the integrity of the DS3 circuit.
NOTE
DS3 BERT patterns can be sent from external test equipment. For example,
the integrated BERT in the DS3 EFM module or the NetVanta 873 can be used
in place of an external DS3 test set.
The Remote Loopback request only works in the C‐Bit framing mode.
NetVanta 873
DS-3 Facility
O-4
Remote Loopback
Framer
Figure O-3. Remote Loopback Diagram
Total Access 5000
Framer
DS-3 Facility
65K510DEP08-1A
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