Free run (non-tracking) mode...........................................................................................................
78
Reference clock errors.....................................................................................................................
78
Automatic clock recovery.................................................................................................................
79
Automatic clock switching................................................................................................................
79
Clock controller commands (LD 60)..........................................................................................................
80
Replace the clock controller......................................................................................................................
81
Task summary list.............................................................................................................................
81
Set switches.....................................................................................................................................
82
Clock controller cabling.............................................................................................................................
83
Chapter 9: ISDN Signaling Link maintenance..................................................................
87
Contents....................................................................................................................................................
87
ISL status formats.....................................................................................................................................
87
Print programs (LD 20, 21, 22).........................................................................................................
88
ISL startup.................................................................................................................................................
89
Dedicated D-channel using DTI or PRI............................................................................................
89
ISL recovery..............................................................................................................................................
90
Chapter 10: Universal Digital Trunk card maintenance...................................................
91
Contents....................................................................................................................................................
91
Enable UDT card.......................................................................................................................................
91
Enable UDT card configured as PRI/PRI2.......................................................................................
91
Enable UDT card configured as DTI/DTI2........................................................................................
92
Enable UDT card configured as DPNSS/DASS...............................................................................
92
Enable clock controller functionality.................................................................................................
92
Maintenance and diagnostics...................................................................................................................
93
LD programs.....................................................................................................................................
93
LD 60 Digital trunk loop and clock controller maintenance..............................................................
93
LD 96 D-Channel and MSDL maintenance......................................................................................
94
LD 75 IDA (DPNSS/DASS2) loop and D-channel maintenance......................................................
94
UDT card startup and status check..................................................................................................
95
UDT card PRI...................................................................................................................................
95
UDT card DTI...................................................................................................................................
96
UDT card DPNSS/DASS2................................................................................................................
97
Chapter 11: 1.5 Mb DTI/PRI maintenance..........................................................................
99
Contents....................................................................................................................................................
99
Overview...................................................................................................................................................
99
Monitor DTI/PRI operation........................................................................................................................
100
Maintenance messages...................................................................................................................
100
Message descriptions.......................................................................................................................
100
Message functions...........................................................................................................................
101
Alarms.......................................................................................................................................................
102
DTI/PRI Yellow alarm (remote alarm)...............................................................................................
102
DTI/PRI Red alarm (local alarm)......................................................................................................
103
DTI/PRI maintenance tools.......................................................................................................................
103
Maintenance commands..................................................................................................................
103
TMDI maintenance commands........................................................................................................
106
D-channel monitoring on the TMDI card..........................................................................................
107
NTAK09 DTI/PRI power on self-test.................................................................................................
107
ISDN Primary Rate Interface Maintenance November 2011 5