Trace a call.......................................................................................................................................
35
Trace function 01..............................................................................................................................
35
Example 1: Successful call with trace function 01............................................................................
36
Example 2: Unsuccessful call with trace function 01........................................................................
36
Trace function 02..............................................................................................................................
37
Feature requirements.......................................................................................................................
37
Chapter 6: Primary Rate Interface maintenance..............................................................
39
Contents....................................................................................................................................................
39
PRI commands (LD 60).............................................................................................................................
40
PRI alarm commands................................................................................................................................
41
PRI test commands...................................................................................................................................
42
PRI tests....................................................................................................................................................
43
PRI self-test......................................................................................................................................
43
PRI automatic loop test....................................................................................................................
44
PRI midnight routines.......................................................................................................................
44
Link diagnostic and remote loop-back tests.....................................................................................
44
PRI error detection....................................................................................................................................
46
Bit error rate.....................................................................................................................................
46
Bipolar violation (BPV) tracking........................................................................................................
46
Cyclic redundancy check (CRC)......................................................................................................
47
Bit error rate thresholds....................................................................................................................
47
Frame slip.........................................................................................................................................
48
Frame alignment..............................................................................................................................
50
TN-to-channel number conversion............................................................................................................
52
Use the error counter................................................................................................................................
53
Replace the PRI........................................................................................................................................
54
Pulsed E and M DTI2 signaling.................................................................................................................
55
Error messages................................................................................................................................
55
Diagnostics.......................................................................................................................................
56
Chapter 7: D-channel maintenance...................................................................................
57
Contents....................................................................................................................................................
57
DCH commands (LD 96)...........................................................................................................................
57
DCH tests..................................................................................................................................................
61
DCH tests 100 and 101....................................................................................................................
61
DCH tests 200 and 201....................................................................................................................
62
DCH traffic (LD 2)......................................................................................................................................
64
TFS009 D-channel...........................................................................................................................
65
MSDL local loopback test (NT6D80).........................................................................................................
68
MSDL remote loopback tests (NT6D80)...................................................................................................
70
Protocol log (PLOG)..................................................................................................................................
72
Replace the DCHI.....................................................................................................................................
75
LD 60 - Loop Maintenance for SYS-12, AXE-10, SWE, SWISSNET, NUMERIS, EuroISDN, NEAX-61,
Asia-Pacific...............................................................................................................................................
76
Chapter 8: Clock controller maintenance.........................................................................
77
Contents....................................................................................................................................................
77
Clock operation.........................................................................................................................................
77
Tracking mode..................................................................................................................................
77
4 ISDN Primary Rate Interface Maintenance November 2011
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