ADTRAN Total Access 5000 - Remote Loopback; Figure O-3. Remote Loopback Diagram

Total Access 5000 Business Services Deployment Guide
O-4 65K510DEP08-1A
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.
Figure O-3. Remote Loopback Diagram
Remote Loopback
DS-3 Facility
NetVanta 873
Framer
DS-3 Facility
Total Access 5000
Framer