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New Member

Problem Fax and Slip error

I've got a problem with incoming fax, I used fax on ramp application and the problem happened sometimes (expecially when I have to receive multiple pages).

I've attached the config and this is the "show controller e1 0/0/0" and  e1 0/3/0:

Gateway#show controllers e1 0/0/0
E1 0/0/0 is up.
  Applique type is Channelized E1 - balanced
  Description: CONTROLLER PRI VOIP
  No alarms detected.
  alarm-trigger is not set
  Version info Firmware: 20090113, FPGA: 20, spm_count = 0
  Framing is CRC4, Line Code is HDB3, Clock Source is Line.
  Data in current interval (442 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


Gateaway#show controllers e1 0/3/0
E1 0/3/0 is up.
  Applique type is Channelized E1 - balanced
  Description: CONTROLLER PRI VOIP
  No alarms detected.
  alarm-trigger is not set
  Version info Firmware: 20090113, FPGA: 20, spm_count = 0
  Framing is CRC4, Line Code is HDB3, Clock Source is Line.
  Data in current interval (481 seconds elapsed):
     0 Line Code Violations, 0 Path Code Violations
     30 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
     30 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
  Data in Interval 1:
     0 Line Code Violations, 0 Path Code Violations
     56 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
     56 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
  Data in Interval 2:
     0 Line Code Violations, 0 Path Code Violations
     56 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
     56 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
  Data in Interval 3:
     0 Line Code Violations, 0 Path Code Violations
     58 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
     58 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
  Data in Interval 4:
     0 Line Code Violations, 0 Path Code Violations
     56 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
     56 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
  Data in Interval 5:
     0 Line Code Violations, 0 Path Code Violations
     56 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
     56 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
  Total Data (last 5 15 minute intervals):
     0 Line Code Violations, 0 Path Code Violations,
     282 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins,
     282 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs

Of course the problem happen only on number received on the controller e1 0/3/0

I've noticed a lot of slip error, this could be the problem? How can I troubleshoot and resolve this kind of problem?

Thanks

8 REPLIES
Cisco Employee

Re: Problem Fax and Slip error

Are the two E1s circuits from the same provider? If you switch the priority of the network-clock-select statements, do the slips on 0/3/0 go away? If so, the two E1s are using separate clocks. The only way to resolve the slips is to isolate the two E1s in separate clocking domains.

It would require moving one of the E1s to a voice-capable NM with separate DSP resources.

-Felipe

New Member

Re: Problem Fax and Slip error

I've changed the network-clock-select priority and now the problem is on 0/0/0 !!!!!!

The e1 0/3/0 works fine!!!

How can I do?

network-clock-select 1 E1 0/3/0
network-clock-select 2 E1 0/0/0

Gateway#show controllers e1 0/0/0
E1 0/0/0 is up.
  Applique type is Channelized E1 - balanced
  Description: CONTROLLER PRI VOIP
  No alarms detected.
  alarm-trigger is not set
  Version info Firmware: 20090113, FPGA: 20, spm_count = 0
  Framing is CRC4, Line Code is HDB3, Clock Source is Line.
  Data in current interval (201 seconds elapsed):
     0 Line Code Violations, 0 Path Code Violations
     12 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
     12 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
  Data in Interval 1:
     0 Line Code Violations, 0 Path Code Violations
     55 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
     55 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
  Total Data (last 1 15 minute intervals):
     0 Line Code Violations, 0 Path Code Violations,
     55 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins,
     55 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs

Hall of Fame Super Gold

Re: Problem Fax and Slip error

Try:

no network-clock-participate wic 0

controller e1 0/0/0

clock source line independent

New Member

Re: Problem Fax and Slip error

There isn't independent on clock source command.

The only choice is bits:

Gateway(config)#controller E1 0/0/0
Gateway(config-controller)#clock source line ?
  bits  Bits Clocking
 

Hall of Fame Super Gold

Re: Problem Fax and Slip error

That indicates you have a VWIC, not VWIC2.

You may be be out of luck then - no resolution.

Cisco Employee

Re: Problem Fax and Slip error

The independant option is only for data T1s and doesn't work for voice. As discussed in my previous post, you'll need to separate the clocking domains by putting one of T1s in an NM with separate DSPs.

-Felipe

Hall of Fame Super Gold

Re: Problem Fax and Slip error

fegarrid wrote:

The independant option is only for data T1s and doesn't work for voice.

I have no router to try this now, but where in documentation is this indicated ?

 you'll need to separate the clocking domains by putting one of T1s in an NM with separate DSPs.

Voice NMs on ISR routers are obsolete solution, there must be a better solution.

Cisco Employee

Re: Problem Fax and Slip error

Paolo,

The documentation clearly states that it does not work with voice.

http://www.cisco.com/en/US/docs/ios/12_2/12_2z/12_2zj/feature/guide/gthwecan.html

"Enhanced clocking capabilities—The 2-port MFT VWIC2s can enable each port to be clocked from independent clock sources for data applications. This independent clocking capability is not supported for voice applications and not supported with the AIM-ATM-VOICE-30 module."

NMs are not obsolete. If you want to discuss this further than start a new thread.

-Felipe

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