[cisco-voip] slip sec error???

[Lindahl, Carl]

Yes, slip seconds will cause problems with echo and other voice anomalies. Depending on Router Chassis, Cards and configuration of where any other clock sources are coming from this can be very easy or very difficult to fix. On this T-1 since it is set to receive clock from the line, is the other side infact set to generate clock, and if so where is it generating the clock signal from?

-----Original Message-----
From: cisco-voip-bounces at puck.nether.net [mailto:cisco-voip-bounces at puck.nether.net]On Behalf Of kevin k
Sent: Wednesday, February 07, 2007 9:14 AM
To: cisco-voip at puck.nether.net
Subject: [cisco-voip] slip sec error???



i have a problem with occasional echo on voip phone. while i was gathering info i came across the "slip sec" error.  i found out what i means but is it critical?  if so, how can i fix it? 




do you guys have any idea?





------------------------------------------------


Slip Secs

 Indicates the replication or deletion of the payload bits of a DS1 frame. A

slip might be performed when there is a difference between the timing of a

synchronous receiving terminal and the received signal.

--------------------------------------------------


T1 0/2/0 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: 20051006, FPGA: 20, spm_count = 0

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

  CRC Threshold is 320. Reported from firmware  is 320.

  Data in current interval (602 seconds elapsed):

     0 Line Code Violations, 0 Path Code Violations

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

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

  Total Data (last 24 hours)

     0 Line Code Violations, 3527 Path Code Violations,

     9925 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 1 Degraded Mins,

     9926 Errored Secs, 0 Bursty Err Secs, 8 Severely Err Secs, 38 Unavail Secs

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