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Re: [Linphone-developers] How to enable GSM support

From: Simon Morlat
Subject: Re: [Linphone-developers] How to enable GSM support
Date: Tue, 16 Jun 2009 22:28:16 +0200
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Hi Conrad,

You need to install libgsm1 and libgsm1-dev (hope they exist), and rebuild 
linphone from scratch.
Maybe we should suggest to debian developpers to add libgsm as a required 
dependency. For sure this codec is important.
For building on ubuntu, you need to install various libraries (check the name, 
I tell this from memory:)
apt-get install libosip2-dev libeXosip2-dev libspeex-dev libspeexdsp-dev 
libgtk2.0-dev libsdl1.2-dev libgsm1-dev

The ffmpeg libraries delivered by debian and ubuntu have video encoder removed 
because of patents problems. Thus you'll need to either build ffmpeg from 
source (./configure --enable-shared && make && make install), or install it 
from (unofficial packages, but full featured).

Best regards,


Le vendredi 12 juin 2009 18:19:38, Conrad Beckert a écrit :
> Hi,
> ... since a while GSM support is not enabled by default anymore. On the
> other hand the codec is quite important for SIP providers.
> I converted to Ubuntu Jaunty 9.04 and found it difficult to install my
> usual Linphone environment. Meanwhile even the linphone version from the
> official repositories lacks the GSM codec.
> My questions:
> How would I enable gsm? Which libraries would I have to install? Do I have
> to configure it while compiling or is it enough to provide the libraries at
> runtime?
> Thank you for help
> Conrad
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