Lucent Technologies FiberReach DDM-2000 - Page 1866

DLP-507
: Detailed Level Procedures 363-206-305
Page 6 of 8 Issue 3, June 2000
DDM-2000 F
IBER
R
EACH
N
ARROWBAND
S
HELF
28. From the test telephone, make a talk test by dialing a test number.
29. Was the call completed with normal transmission quality in both directions?
30. Has the channel unit been replaced for this test (talk test)?
31. Replace the channel unit and repeat from
Step 16
.
32. Use enclosure drawings to check wiring. Look for a tip and ring reversal
between the NBS backplane and TB1. Also check T0 cross connects and
verify the LDS channel and number assignments. Correct the problem before
continuing with the next step.
33. While watching the VOM, put the handset on the hook.
34. After 3 seconds, does the meter indicate −48.0 V DC?
35. Replace the channel unit and repeat from
Step 16
.
36. Have someone dial or you dial the telephone number of the test telephone.
37. Does the test telephone ring normally?
If
YES
, proceed to
Step 33
.
If
NO
, continue with
Step 30
.
If
YES
, proceed to
Step 32
.
If
NO
, continue with
Step 31
.
If
YES
, proceed to
Step 36
.
If
NO
, continue with
Step 35
.
If
YES
, proceed to
Step 39
.
If
NO
, continue with
Step 38
.