[cisco-voip] echo in CUCM 6.1 !!!

[Ed Leatherman]

Sinisa,

Have you seen the troubleshooting guides on cisco.com regarding echo?
http://www.cisco.com/en/US/tech/tk652/tk698/technologies_tech_note09186a0080149a1f.shtml

The echo is probably less to do with your CUCM and IP Phones and more to do
with the gateway and the outside telephone systems your people are calling.

Ed

On Wed, Jul 23, 2008 at 8:19 AM, Djokic Sinisa <sdjokic at mds.rs> wrote:

>
>
> hi guys..
>
> did anybody had issues with echo in system with CUCM 6.1.2 and 2821 with
> 12.4 code ( varios version - 12.4.9T6, 12.4.15T etc. ), vwic-1mft-t1/e1 card
> and PVDM2-48..
>
> the echo can be heard when call is placed to certain phone numbers, and it
> is noticed on 7975 and 7911 phones - the only phone types in system..
>
>
>
> we changed everything we could in VG config, from echo cancel coverage, IOS
> image to attenuation..and nothing helped..
>
>
>
>
>
> any ideas..
>
>
>
>
>
> thanx..
>
>
>
>
>
> regards..
>
>
>
> *Sinisa Djokic*
>
> System Engineer
> CCNP,CCDA,CQS-CWLDS,CS-CIPTDS,CS-CIPCCES Cisco Certified
>
>
>
>
>
> MDS Informaticki inzenjering
> Bul. Arsenija Carnojevica 170
> 11070 Novi Beograd, Serbia
> Tel: +381 11 2015 200, 2015 273
> Fax: +381 11 3194 954
> www.mds.rs
> sdjokic at mds.rs
>
>
>
> _______________________________________________
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> cisco-voip at puck.nether.net
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>
>


-- 
Ed Leatherman
Senior Voice Engineer
West Virginia University
Telecommunications and Network Operations
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