[Freeswitch-users] g711 to g722 transcoding causing distortion on Polycom IP6000 handsets

Brian West brian at freeswitch.org
Mon Mar 8 11:51:39 PST 2010

I'm going to guess you're using 1.0.4?


On Mar 8, 2010, at 1:42 PM, Dan Lane wrote:

> This is almost certainly more of a Polycom issue than a FreeSWITCH one
> but I'll mention it here on the offchance that someone else has
> experienced the following:
> Loud G.711a calls that are being transcoded to G.722 are massively
> distorted on Polycom IP6000 handsets and on all other handsets the
> call just sounds loud and isn't distorted. This is most common in
> conference calls where callers are using a mixture of codecs.
> If I disable G.722 the Polycom sounds fine even though the G.711a call
> is still too loud and if I lower the volume of the conference the
> distortion still happens.
> So, has anyone else experienced this and if so, did you find a solution?
> Regards,
> Dan Lane
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