Verilink Access Manager 2000 (896-502037-001) Product Manua Uživatelský manuál stáhnout pdf (Strana 235)

CSU acceptance testing

Access Manager 2000 User Manual

111

31. Verify that the STAT LED is lit yellow on the near-end and far-end

CSUs (NCC or TAC), indicating that the test is in progress.

If the STAT LED flashes red and yellow at either end, the test has

failed (CSU is detecting errors in the looped QRSS signal). Check

the T1 circuit between the two CSUs. The source of the failure is

either in the circuit between the CSUs or in either CSU. Replace the

CSUs and re-route the circuit as required, then repeat the acceptance

testing procedure.

32. Select the View Test Status Results option. If the screen

shows some Errors, the test has failed. Check the T1 circuit between

the two CSUs.

33. Press to return to the Select CSU Test Activity screen, then

select the Abort Test in Progress option and press

34. Press to return to the On-line: AS2000 screen.

35. Choose the Loopbacks option and press .

36. Type the shelf and plug numbers of the NCC or TAC and press the

function key.

37. Choose the Deactivate Network Loopback (PLB and

LLB) option and press .

38. Type Y to specify the far-end network loopbacks and press

39. Choose the Activate PLB option and press .

40. Type Y to specify the far-end payload loopback (PLB), and press

41. Type Y to activate the PLB when the loopback warning screen

appears. At the far-end NCC or TAC, also verify that the NET LED

is solid yellow (PLB is activated).

42. Press to return to the On-line: AS2000 screen.

43. Choose the Select Test option and press .

Enter

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Verilink Access Manager 2000 (896-502037-001) Product Manua Uživatelský manuál Strana 235