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New Member

CME intermitant incoming low volume calls

Hi, I am experiencing intermitant low volume incoming calls on CME 4.1 with a PRI. Especially and mostly when doing a group pickup of another extension. There is no discernable pattern to the quiet calls, from various local, national and international numbers.

Any help appreciated.

Ryan

  • IP Telephony
1 ACCEPTED SOLUTION

Accepted Solutions
Hall of Fame Super Gold

Re: CME intermitant incoming low volume calls

Hi, I suggest you upgrade to 12.4(11)XJ4 that is the most stable release with most bugfixes.

For the phones I suggest 8.2(2)SR4 alsto latest stable.

I have this combo on many customers, but admittedly they don'use group pick-up.

19 REPLIES
Hall of Fame Super Gold

Re: CME intermitant incoming low volume calls

Hi, can you send output of "show controllers E1" or T1. you may be getting slips.

New Member

Re: CME intermitant incoming low volume calls

Your right on the slips. here is a partial output. Will this be a provider issue?

E1 0/0/0 is up.

Applique type is Channelized E1 - balanced

No alarms detected.

alarm-trigger is not set

Version info Firmware: 20070320, FPGA: 20, spm_count = 0

Framing is CRC4, Line Code is HDB3, Clock Source is Line.

CRC Threshold is 320. Reported from firmware is 320.

Data in current interval (672 seconds elapsed):

0 Line Code Violations, 0 Path Code Violations

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

542 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

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

728 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

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

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

Data in Interval 3:

Hall of Fame Super Gold

Re: CME intermitant incoming low volume calls

No, config issue:

network-clock-participate wic 0

network-clock-select 1 e1 0/0/0

And you will be ok.

Hope this helps, please rate post if it does!

New Member

Re: CME intermitant incoming low volume calls

Thanks, I will give it a go and see how it gets on. I will have to leave it for a few days for the company to come back to me.

Hall of Fame Super Gold

Re: CME intermitant incoming low volume calls

Sure. Remember, ISR routers need network-clock commands. Older models do not.

New Member

Re: CME intermitant incoming low volume calls

The commands have resolved the slip issues on the E1 card. However, I am still experiencing intermittant and seemingly random quiet/silent incomming calls when the call is answered via a group pick-up.

Any Ideas?

Hall of Fame Super Gold

Re: CME intermitant incoming low volume calls

Which exact IOS are you using, which phone types and firmware on them ?

New Member

Re: CME intermitant incoming low volume calls

IOS is spservicesk9-mz.124-15T1 sitting on a 2811 with 64Mb Flash and 256Mb Dynamic Ram.

CUME is 4.1(0)with 2 x 32 PVDM modules.

Phones are 14 x 7941G running SCCP41.8-2-2SR1S all placed in 1 pick-up group.

Direct calls to extensions seem to be fine. The quiet calls are when a group pick-up is done. Also the silence is one way. incoming can't be heard, but out going can be.

Hall of Fame Super Gold

Re: CME intermitant incoming low volume calls

Hi, I suggest you upgrade to 12.4(11)XJ4 that is the most stable release with most bugfixes.

For the phones I suggest 8.2(2)SR4 alsto latest stable.

I have this combo on many customers, but admittedly they don'use group pick-up.

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