Re: [Linphone-developers] Regular irregularity in RTP paquets sending

[gegetel]

Le 28/09/2013 17:56, I wrote :
> Hello,
>
> I know that I am attempting to do is not the usual job of Linphone, but
> perhaps somebody here can show to me a solution to my problem. Please, have
> a look here http://cherchetout.pagesperso-orange.fr/FaxOverVoIP.html and
> mainly at the end part which is written in blue characters. I beg your
> pardon for this is not in english...

Using linphonecsh, I recently found a way to make linphonec sending RTP 
packets with constant intervals of 20 ms (or 30 ms depending on provider and 
time of day) ± epsilon with epsilon < 1 ms.

After having begun a session and registered, I simply initiate a call like 
this :

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

linphonecsh generic "soundcard use files"

sleep 0.1

linphonecsh dial sip:address@hidden

sleep 1

linphonecsh generic "record /dev/shm/received.wav"

aplay -D hw:0,0 -f S16_LE -c 1 -r 8000 -t wav --buffer-size=96 
/dev/shm/received.wav &

arecord -D hw:0,0 -f S16_LE -c 1 -r 8000 -t wav --buffer-size=96 
/dev/shm/sent.wav &

linphonecsh generic "play /dev/shm/sent.wav"

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Unfortunately, this improvement doesn't allow me to send faxes, but I think 
I have identified the true problem and I shall explain this soon in this 
list because only a developer could resolve it.