Voice Quality Degraded, Call Drops.

Unanswered Question
Mar 11th, 2009

Hi

I have CUCME 7.0 on 2811 router with 8 isdn lines.

From past one weeks time users are facing a voice quality problem and when i enabled the debug ISDN q931 on the router i have noticed error keep repeating " unassigned number /un allocated number "

And also when i enable i have noticed this error " Mar 12 06:14:41.867: ISDN BR0/2/1 Q921: User RX <- SABMEp sapi=0 tei=0

Mar 12 06:14:41.867: ISDN BR0/2/1 Q921: User TX -> UAf sapi=0 tei=0

Mar 12 06:14:42.575: ISDN BR0/2/1 Q921: User RX <- SABMEp sapi=0 tei=0

Mar 12 06:14:42.575: ISDN BR0/2/1 Q921: User TX -> UAf sapi=0 tei=0

Mar 12 06:14:42.851: ISDN BR0/2/1 Q921: User RX <- SABMEp sapi=0 tei=0

Mar 12 06:14:42.851: ISDN BR0/2/1 Q921: User TX -> UAf sapi=0 tei=0"

And also

Mar 12 04:49:30.935: ISDN BR0/2/1 **ERROR**: handle_l2d_srq_mail: Layer 1 inactive

BARCELONA_CME#

Mar 12 04:58:16.729: ISDN BR0/1/1 **ERROR**: handle_l2d_srq_mail: Layer 1 inactive

BARCELONA_CME#

Mar 12 05:25:00.381: ISDN BR0/2/1 **ERROR**: handle_l2d_srq_mail: Layer 1 inactive

BARCELONA_CME#

Mar 12 05:26:08.893: ISDN BR0/2/1 **ERROR**: handle_l2d_srq_mail: Layer 1 inactive

Mar 12 05:26:08.901: ISDN BR0/2/1 **ERROR**: handle_l2d_srq_mail: Layer 1 inactive

BARCELONA_CME#sh clock

06:47:32.474 cdt Thu Mar 12 2009

BARCELONA_CME#

Mar 12 05:56:06.039: ISDN BR0/1/1 **ERROR**: handle_l2d_srq_mail: Layer 1 inactive

I have noticed there are CRC errors on the all the BRI interfaces.

When i check with the Telecom provider he said there is no problem from his side.

Please suggest me how can i fix this error and improve the voice quality.

I have attached the sh run from my cme.

Thanks

ARIF

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Paolo Bevilacqua Wed, 03/11/2009 - 23:29

Which exact IOS is that ?

You should be able to eliminate almost all CRC errors with "network-clock-select 1 bri 0/2/0" and lower priorities for each BRI in use.

Unrelated to thta, you can simplify the translation-rules by much. When strippinr prexifing, the recall \1 is never necessary.

syedarif25 Wed, 03/11/2009 - 23:45

Hi

Thanks for the reply.

When i enable the network-clock-select 1 bri 0/2/0 and 2 bri 0/3/0 etc.

FROM SH RUN

network-clock-participate wic 0

network-clock-participate wic 1

network-clock-participate wic 2

network-clock-participate wic 3

network-clock-select 1 BRI0/2/0

network-clock-select 2 BRI0/0/0

network-clock-select 3 BRI0/1/0

network-clock-select 4 BRI0/1/1

I get this error

Mar 12 06:41:34.731: %MARS_NETCLK-3-HOLDOVER: Entering Holdover for Controller BRI0/2/0

--More--

Mar 12 06:41:41.271: %MARS_NETCLK-3-HOLDOVER: Exiting Holdover for Controller BRI0/2/0

--More--

Mar 12 06:41:48.771: %MARS_NETCLK-3-HOLDOVER: Entering Holdover for Controller BRI0/2/0

what does it mean .

Can you please elaborate a bit on simplifying the translation rule.

ARIF

syedarif25 Wed, 03/11/2009 - 23:51

Hi

Sorry forgot to mention the IOS version , perhaps my attachment has the detals.

Here is the IOS version

BARCELONA_CME#sh ver

BARCELONA_CME#sh version

Cisco IOS Software, 2800 Software (C2800NM-SPSERVICESK9-M), Version 12.4(20)T, RELEASE SOFTWARE (fc3)

Technical Support: http://www.cisco.com/techsupport

Copyright (c) 1986-2008 by Cisco Systems, Inc.

Compiled Thu 10-Jul-08 22:01 by prod_rel_team

ROM: System Bootstrap, Version 12.3(8r)T7, RELEASE SOFTWARE (fc1)

BARCELONA_CME uptime is 1 day, 15 hours, 20 minutes

System returned to ROM by power-on

System restarted at 16:30:49 cdt Tue Mar 10 2009

System image file is "flash:c2800nm-spservicesk9-mz.124-20.T.bin"

This product contains cryptographic features and is subject to United

States and local country laws governing import, export, transfer and

use. Delivery of Cisco cryptographic products does not imply

third-party authority to import, export, distribute or use encryption.

Importers, exporters, distributors and users are responsible for

compliance with U.S. and local country laws. By using this product you

agree to comply with applicable laws and regulations. If you are unable

to comply with U.S. and local laws, return this product immediately.

A summary of U.S. laws governing Cisco cryptographic products may be found at:

http://www.cisco.com/wwl/export/crypto/tool/stqrg.html

If you require further assistance please contact us by sending email to

[email protected].

Cisco 2811 (revision 53.51) with 249856K/12288K bytes of memory.

Processor board ID FHK0913F0DS

2 FastEthernet interfaces

8 ISDN Basic Rate interfaces

DRAM configuration is 64 bits wide with parity enabled.

239K bytes of non-volatile configuration memory.

62720K bytes of ATA CompactFlash (Read/Write)

Configuration register is 0x2102

ARIF

etmarcof Sun, 09/20/2009 - 12:58

Hi,

Have you solved your problem?

If yes, how do you solve it?

Best Regards,

MC

Paolo Bevilacqua Sun, 09/20/2009 - 13:02

The holdover messages reported above are normal when using BRI and network-clock-select. They do not indicate any problem at all.

If you have a new problem, open a new thread.

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