You're very observative, but you should have started by looking at the mod_gsmopen code. It uses the audio_device handle from the config file to get the GSM stream as you have noticed.

On the given circumstances, i think just properly configuring the device will run it on gsmopen.

On Fri, Nov 14, 2014 at 1:26 AM, Charles Devereaux <freeswitch@guylhem.net> wrote:

Hello

I found some answers for my problems:

- For the bootstrap.sh problems on a debian/sid :
unset PERL5LIB (to avoid automake problems with a bad environment variable)
apt-get install libtool-bin

- To get the audio stream:

For some reason, you can't do that from ttyUSB0. You must be connected on TTYUSB2 @9600 bauds, and then AT^DDSETEX=2 should send that audio stream to ttyUSB1

- It did work, but only once
AT+COPS=? show only 1 network (which I'm not a client of) so I guess I just have a weak signal

But at least it's going forward and the EM770 might work :-)

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