[Freeswitch-users] Choosing a Codec.

Vinuth Madinur vinuth.madinur at gmail.com
Tue Dec 22 23:08:53 PST 2009

My setup is as follows:

FreeSWITCH -> SIP Trunk -> PSTN.

>From freeswitch, I'm making outbound calls using event socket via the
"external" profile. Except for the ext_rtp_ip and ext_sip_ip, everything is
default settings. Using "playback" application, I'm playing a mu-law audio.
I'm also starting the "vmd" application, so that I can replay the message on

Thanks for your suggestion on native format. I'll try it.


On Wed, Dec 23, 2009 at 4:41 AM, Brian West <brian at freeswitch.org> wrote:

> If its degrading like that you have bigger issues... the sound files played
> from wav files vs raw PCM files is NO different on a land line and I speak
> from very many years of experience... your wav files are ulaw in wav
> containers thus will never play native which might just be part of your
> problem.  You would have to have raw headerless data in a .PCMU file for it
> to play native.
> Can you elaborate on your setup a bit more?
> /b
> On Dec 22, 2009, at 4:54 PM, Vinuth Madinur wrote:
> > The audio quality is a lot different when it plays on the landline. And
> the quality degrades a bit when the message played is lengthy >30s. So I
> thought it would be better if I have the file in mu-law and play it as is..
> >
> > Thanks,
> > Vinuth.
> _______________________________________________
> FreeSWITCH-users mailing list
> FreeSWITCH-users at lists.freeswitch.org
> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
> http://www.freeswitch.org
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.freeswitch.org/pipermail/freeswitch-users/attachments/20091223/9ee6022d/attachment-0002.html 

More information about the FreeSWITCH-users mailing list