[cisco-voip] IP Communicator half Duplex

Wes Sisk wsisk at cisco.com
Tue Jan 4 10:20:10 EST 2011


2 options:

1. audio i/o device on pc doesn't support duplex.  can you confirm 
otherwise?
2. a problem in the CIPC media engine, it's happened before: 
CSCsd00604    Voice cutting in and out in speakermode

/Wes

Scott Voll wrote:
> This happens with IPC client to IP Phone without Router.
>
> packet capture shows that while IP Phone talks, no audio comes from 
> IPC client.
>
> I'm guessing a BUG in the echo Canceler of the IPC Client...... But 
> I'm usually wrong ;-)
>
> Scott
>
> On Mon, Jan 3, 2011 at 9:06 PM, Dew Swen <dew.swen at gmail.com 
> <mailto:dew.swen at gmail.com>> wrote:
>
>     Could you please send echo canceller config on the router?
>
>
>
>
>
>
>     On 03.Oca.2011, at 21:53, Scott Voll <svoll.voip at gmail.com
>     <mailto:svoll.voip at gmail.com>> wrote:
>
>         We have been troubleshooting some issues with IP Communicator
>         (version 7.0.5.1)
>
>         I can reproduce on demand a half Duplex sound issue.
>
>         if two people are talking. One on a IP Communicator Client and
>         the other person can be anything, IP Phone, PSTN caller, etc.
>          If the two have a conversation and talk at the same time, you
>         lose the audio stream from the IP Communicator Client going to
>         the PSTN / IP Phone.    I see no packet lose and the packets
>         still incrementing.  I'm not sure if maybe a echo canceller is
>         not working correctly.
>
>         has anyone seen something like this?
>
>         Thanks
>
>         Scott
>         _______________________________________________
>         cisco-voip mailing list
>         cisco-voip at puck.nether.net <mailto:cisco-voip at puck.nether.net>
>         https://puck.nether.net/mailman/listinfo/cisco-voip
>
>
> ------------------------------------------------------------------------
>
> _______________________________________________
> cisco-voip mailing list
> cisco-voip at puck.nether.net
> https://puck.nether.net/mailman/listinfo/cisco-voip
>   
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://puck.nether.net/pipermail/cisco-voip/attachments/20110104/b206c4f6/attachment.html>


More information about the cisco-voip mailing list