Slip Secs and Errored Secs Occuring

[Rowell Dionicio]

I have a 3745 with a lot of slip secs and error secs on the controller. I am not versed in voice yet but I can tell call quality is not great. Some users report that callers cannot hear them.

3745#sh controller T1

T1 0/1 is up.

  Applique type is Channelized T1

  Cablelength is long gain36 0db

  No alarms detected.

  alarm-trigger is not set

  Soaking time: 3, Clearance time: 10

  AIS State:Clear  LOS State:Clear  LOF State:Clear

  Version info Firmware: 20071009, FPGA: 20, spm_count = 0

  Framing is SF, Line Code is AMI, Clock Source is Line.

  CRC Threshold is 320. Reported from firmware  is 320.

  Data in current interval (569 seconds elapsed):

     0 Line Code Violations, 0 Path Code Violations

     569 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins

     569 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,

     86400 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins,

     86400 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs

T1 4/0 is up.

  Applique type is Channelized T1

  Cablelength is long 0db

  No alarms detected.

  alarm-trigger is not set

  Soaking time: 3, Clearance time: 10

  AIS State:Clear  LOS State:Clear  LOF State:Clear

  Version info Firmware: 20071011, FPGA: 13, spm_count = 0

  Framing is ESF, Line Code is B8ZS, Clock Source is Line.

   Current port master clock:recovered from backplane

  Data in current interval (685 seconds elapsed):

     0 Line Code Violations, 0 Path Code Violations

     0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins

     0 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,

     0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins,

     0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs

Also configured on the router:

no network-clock-participate slot 2

network-clock-participate slot 4

network-clock-participate wic 2

network-clock-select 1 T1 4/0

Can someone point me in the right direction to troubleshoot?

[Chris Deren]

Add wic 0 to network-clock-particiapte, i.e. network-clock-participate wic 0.

Can you also provide "sh network-clocks"?

Chris

[Rowell Dionicio]

Here is the result of the sh network-clocks command:

3745#sh network-clocks

  Network Clock Configuration

  ---------------------------

  Priority      Clock Source    Clock State     Clock Type

     1          T1 4/0          GOOD            T1

    10          Backplane       GOOD            PLL

  Current Primary Clock Source

  ---------------------------

  Priority      Clock Source    Clock State     Clock Type

     1          T1 4/0          GOOD            T1

Can you explain what network-clock-participate wic 0 does?

[Chris Deren]

Your controller output shows you have a T1 circuit in port 0/1 assuming this is your voice circuit you are having issues with, you want to make sure it participates in clocking as all voice circuits and DSPs need to. Clock slips/errors are caused by not having proper clocking participation as evident in your environment.

HTH, please rate all useful posts!

Chris

[Rowell Dionicio]

Will I need to schedule maintenance to put in these commands?

[Chris Deren]

Depends on your change management process, but applying this command does not cause any outage.

HTH, please rate all useful posts!

Chris

[Rowell Dionicio]

Thanks Chris. I'll try this out and post back the results tomorrow.

[Rowell Dionicio]

I tried to insert the command:

network-clock-participate wic 0

The response from the router was:

WIC slot is empty or does not support clock participate

Which commands can I use to display all the WICs?