Hi to all,
i have a 2811 Voice Gateway and it is configured as follows:
Controller E1 0/0/0 = PRI Connected to Legacy PBX. Clock source is internal.
Controller E1 0/1/0 = PRI Connected to PSTN. Clock source is line
The connection to the PSTN shows no slips over a 24 hour period, but the connection to the PBX shows a slip once about every 300 seconds and i think it cause me some problem with fax-machine of PBX.
Clocking configured as follows:
network-clock-participate wic 0
network-clock-participate wic 1
network-clock-select 1 E1 0/1/0
There is a way to troubleshooting these sleeps? If i set the PBX as the source clock and i configure E1 0/0/0 with clock source line is a good test? or it can cause slips on E1 0/1/0?
The output is the follow:
MGCP_GW#show controllers e1 0/0/0 brief
E1 0/0/0 is up.
Applique type is Channelized E1 - balanced
Cablelength is Unknown
No alarms detected.
alarm-trigger is not set
Version info Firmware: 20090408, FPGA: 13, spm_count = 0
Framing is CRC4, Line Code is HDB3, Clock Source is Internal.
Data in current interval (708 seconds elapsed):
0 Line Code Violations, 0 Path Code Violations
2 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
2 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
Total Data (last 24 hours)
0 Line Code Violations, 0 Path Code Violations,
204 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins,
204 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 4 Unavail Secs
Thanks a lot.
That test confirms that the clocking on the PBX isn't set right. You need to set the PBX to receive clock from the Cisco router.
Use the second configuration (which is the one I recommended earlier in my post) and troubleshoot your clocking issues from the PBX side.