So I did modify mod_openzap to provide the od trace command to the cli. I started trying to parse the incoming clip, but I have to do it again as the incoming signal is saturated so I can't see anything interesting.
I'll post my results whenever I get something. Shall I send the modified mod_openzap.c to the list ? About the difference on the modulation settings for CLIP, could anybody suggest some way to have it configurable by files ? Thanks François On Wed, 20 Jan 2010 14:01:03 -0500, Moises Silva wrote: Hi again François, Please keep the conversation in the freeswitch-dev mailing list, unless you want private paid support ;-) See the answer to your question below ... On Wed, Jan 20, 2010 at 3:57 AM, François Legal wrote: Do you know if there is a way (except using an oscilloscope to sample the line signal) to get a dump of the data sent to the card by openzap (is it samples or something) and vice versa. What I would like to do is see what is returned to openzap when a call arrives on an FXO port (CLIP is working in that direction) and compare it to what is being sent to the card when sending CLIP to and FXS port. Once the call gets into the computer we're talking about digital audio samples. In a typical configuration a Sangoma board will give you 160 samples of audio each 20ms (most likely encoded in ulaw, that can be verified in /etc/wanpipe/wanpipex.conf for the FXO/FXS board, look at the TDMV_LAW parameter). There is an openzap API command to record the digital audio read from the board, check ZAP_COMMAND_TRACE_INPUT and ZAP_COMMAND_TRACE_OUTPUT. What we currently lack is a FreeSWITCH command in mod_openzap to enable/disable the audio tracing. It should be trivial to hack mod_openzap.c and add that command, if you need help with that ping me on IRC (moy). -- Moises Silva Senior Software Engineer Sangoma Technologies Inc. | 50 McIntosh Drive, Suite 120, Markham ON L3R 9T3 Canada t. 1 905 474 1990 x 128 | e. m...@sangoma.com [2] Links: ------ [1] mailto:de...@thom.fr.eu.org [2] mailto:m...@sangoma.com
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