[cisco-voip] Poor Receiving Audio on 69xx, CUCM 8.5.1

[Anthony Kouloglou]

Hmmm ,
i can't use QoS because it is not a cisco switch where the phones are 
connected.
I have checked during an active call both 79xx and 69xx.
They both report a few Lost Rcv packets (~50-80 in a 5 minute call).
But i can tell: there is not data packet loss over the wan.


*???/Kind Regards*

*??????? ????????? - Anthony Kouloglou*

*/Field Network Engineer, Cisco UC Specialized/*


*DATAWAYS Communications S.A.* <http://www.dataways.gr/>
75, Kanari Str., GR-544 53 Thessaloniki - Greece
Phone +30 2310 953953  Fax +30 2310 953963


On 28-Mar-12 16:37, Roger Wiklund wrote:
> Do you have QoS enabled on the switchports where the 6921 phones are
> connected? I would check the network to ensure you have the EF tags
> and QoS is enabled end to end.
> I know you said that the other phones are working, but I would check
> for EF drops in routers/switches.
>
> /Roger
>
> On Wed, Mar 28, 2012 at 3:21 PM, Anthony Kouloglou<akoul at dataways.gr>  wrote:
>> OK Bill,
>> thanks for your time.
>>
>> BR
>> Anthony
>>
>>
>> On 28-Mar-12 16:19, george.hendrix at l-3com.com wrote:
>>> Duh, guess I totally missed where you said that.  I can't say anything
>>> about the 69XX models, haven't used them yet.
>>>
>>> Bill
>>>
>>>
>>> -----Original Message-----
>>> From: Anthony Kouloglou [mailto:akoul at dataways.gr]
>>> Sent: Wednesday, March 28, 2012 9:04 AM
>>> To: Hendrix, George (Bill) @ LSG - STRATIS
>>> Cc: cisco-voip at puck-nether.net
>>> Subject: Re: [cisco-voip] Poor Receiving Audio on 69xx, CUCM 8.5.1
>>>
>>> Hi,
>>> when i say poor audio receiving, i mean choppy (cutting in, in the
>>> remote site).
>>> This is noticed ONLY on 69xx!!
>>> All 7911, 7961 can hear nice (even in g711) so the upload bandwidth of
>>> the central site is not the problem.
>>> I didn't want to use g711 since i though it is more bw consuming.
>>> That is why i tried g729 (and ilbc)
>>> All the times, only the 69xx could not receive well (choppy audio,
>>> cutting in)
>>>
>>> BR
>>> Anthony
>>>
>>> On 28-Mar-12 15:54, george.hendrix at l-3com.com wrote:
>>>> Also, did you configure the codec to be used between each site and the HQ
>>>> in Regions?  We recently installed 8.5 and I noticed when the codec was set
>>>> to "64 kbps (G.722, G.711)" the codec actually used on the call was G.722
>>>> and it sounded terrible.  I had to go into CallManager service parameters
>>>> and set "G.722 Code Enabled" to disabled.  After this, the calls sounded
>>>> fine.
>>>>
>>>> Bill
>>>>
>>>>
>>>> -----Original Message-----
>>>> From: cisco-voip-bounces at puck.nether.net
>>>> [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Anthony Kouloglou
>>>> Sent: Monday, March 26, 2012 5:11 PM
>>>> To: cisco-voip at puck-nether.net
>>>> Subject: [cisco-voip] Poor Receiving Audio on 69xx, CUCM 8.5.1
>>>>
>>>> Hi all,
>>>> in a CUCM 8.5 i have several 69xx and 79xx at a remote site.
>>>> The HQ has a cluster of 2 CUCMs 8.5.1
>>>> There is 30ms RTT between HQ and remote site and data packet loss.
>>>> Though, all 69xx at the remote site have very poor audio either with
>>>> g711, g729 or iLBC!!
>>>> The other end at the remote site hears fine with no disruptions.
>>>> All 7911, and 7961 at the remote site have very good reception of g729
>>>> or g711.
>>>> Could the 69XX be such a bad product?
>>>>
>>>> BTW, they run the latest firmware.
>>>>
>>>> BR
>>>> Anthony
>>>> _______________________________________________
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>>>> cisco-voip at puck.nether.net
>>>> https://puck.nether.net/mailman/listinfo/cisco-voip
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