Re: [Linphone-developers] Linphone 0.9.1 Vocoder issue, seems not able to enable MULAW, ALAW, GSM

[Simon Morlat]

> Problem is that Linphone is not able to handle any of the ALAW, MULAW or 
> GSM.
Probably because you have configured linphone to work on 56k RTC modem.
In the property box, section network, you have a menu in which to select
your type of connection. Linphone only enables codec that are able to
work with your bandwidth. This is to avoid awfull problems with
bandwidth limitations. 
In the codec box, you will see that codecs in red: these are the one
that can't work with your current bandwidth selection.
If it still does not work after setting the correct connection type,
contact me again.
Simon

> 
> 1 Issues with call from Linphone to Soft phone :
> When I try to make call with either of ALAW, MULAW or GSM enabled, m line in 
> sdp has no corrsponding vocoder, but if call is made enabling vocoder for 
> LPC or Speex, I see m line has vocoder for LPC/SPeex.
> This might be due to the following issues :
> 
> When trying to enable either of ALAW, MULAW, GSM through the linphone 
> interface, I see no log generated for these vocoders. But for LPC and speex, 
> I am able to enable the these vocoders, and also log shows:
> "Added audio payload type  to SDP properties 115"
> "Added audio payload type  to SDP properties 111"
> 
> Also I notices some warning messages while starting linphone as :
> "MediaStream WARNING **: Unable to find mixer for id 1."
> "MediaStream WARNING **: Unable to find mixer for id 3."
> 
> 2. When trying to call from Softphone to linphone using MULAW/ALAW
> "415 Unsupported media" is generated by linphone
> 
> Please help me figure out the issue.
> 
> Also if you know some windows compatible free phone through which I can test 
> linphone please let me know.
> 
> 
> 
> 
> 
> 
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