Paradyne 3150 Operator's Manual

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Paradyne 3150 Operator's Manual Manual pdf 67 page image

Maintenance4-173150-A2-GB21-80 February 1998Starting a Repeater LoopbackThe Repeater Loopback command (RLB) loops thesignal being sent to the network back to the DTE and dataports. The signal is looped back as close to the networkinterface as possible (after it has passed through theframing circuitry of the CSU). Framing CRCs and BPVsare corrected.To perform a Repeater loopback,1. From the top-level menu screen, select Test.2. From the Test screen, select Lpbk.F1Test:Rlpbk Lpbk PtrnsF2 F33. From the Loopback screen, press the key untilthe RLB selection appears on the screen.4. Select RLB.F1Loopback:PLB DLB RLBF2 F3Test Started appears on Line 2. If a Repeaterloopback is already in progress, the AlreadyActive message appears. If an invalid combinationof loopbacks is in progress, the error messageInvld Test Combo appears (see Table4-8 for validloopback test combinations).Aborting LoopbacksThe Abort Loopback command stops all loopback testsor any selected loopback test currently active on the CSU.To abort one or more loopback tests,1. From the top-level menu screen, select Test.2. From the Test screen, select Lpbk.F1Test:Rlpbk Lpbk PtrnsF2 F33. From the Loopback screen, select Abort.F1Loopback:Abort LLB PLBF2 F34. From the Loopback Abort screen, press thedesired Function key to abort All or one specificloopback test. Use the scroll keys, if necessary.F1Loopback: AbortAll LLB PLBF2 F3When abort is complete, the message CommandComplete appears on the Abort screen.NOTEIf you mistakenly choose to aborta loopback test that is notcurrently running, a CommandComplete message will stilldisplay and the loopback that iscurrently active will still berunning. Use the TStat branch toview the test status to determine ifthe abort was successful.