Installation guide

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In the following example, a trunk clock from an 8 PRI CT1 feature card is set at priority 2 and uses slot 4 and ds1 port
(controller) 6:
Gateway(config)# dial-tdm-clock priority 2 4/6
Gateway(config)# exit
In the following example, a trunk clock from a CT3 feature card is set at priority 2 and uses slot 1, ds3 port 0, and ds1 port 19:
Gateway(config)# dial-tdm-clock priority 2 1/0:19
Gateway(config)# exit
In the following example, the free-running clock is set at priority 3:
Gateway(config)# dial-tdm-clock priority 3 free
Gateway(config)# exit
Verify Clocking
You can verify the system primary and backup clocks, the status of all trunk feature card controller clocks, and information
about and the history of the last 20 TDM clock changes and the events that caused them. Use the following commands.
• T1 or E1 feature card—Verify your default system clocks and clock history by using the show tdm clocks command:
Gateway# show tdm clocks
Primary Clock:
--------------
TDM Bus Master Clock Generator State = HOLDOVER
Backup clocks for primary:
Source Slot Port DS3-Port Priority Status State
-------------------------------------------------------------
Trunk cards controllers clock health information
------------------------------------------------
Slot Type 7 6 5 4 3 2 1 0
1 T1 B B B B B B B B
CLOCK CHANGE HISTORY
--------------------------
CLOCK Event Time
----- ----- ----
1/1 Loss Of Signal (LOS) 00:00:22 UTC Tue Nov 30 1999
1/2 Loss Of Signal (LOS) 00:00:22 UTC Tue Nov 30 1999
1/3 Alarm Indication Signal (AIS) 00:00:22 UTC Tue Nov 30 1999
1/4 Alarm Indication Signal (AIS) 00:00:22 UTC Tue Nov 30 1999
1/5 Alarm Indication Signal (AIS) 00:00:22 UTC Tue Nov 30 1999
1/6 Alarm Indication Signal (AIS) 00:00:22 UTC Tue Nov 30 1999
1/7 Alarm Indication Signal (AIS) 00:00:22 UTC Tue Nov 30 1999
Gateway#
• CT3 feature card—Verify your TDM clock history by using the show tdm clocks command:
Gateway# show tdm clocks
Primary Clock:
--------------
System primary is slot 7 ds3_port 0 ds1_port 1 of priority 1
TDM Bus Master Clock Generator State = NORMAL
Backup clocks for primary:
Source Slot Port DS3-Port Priority Status State
-------------------------------------------------------------
Trunk 7 8 YES 214 Good Default
Trunk 7 9 YES 215 Good Default