Hello, I am trying to use mod_spandsp to detect call progress. I haven t been successful so far. I am getting the following error messages. ================================================ 2012-03-03 23:55:08.398205 [DEBUG] mod_spandsp_dsp.c:379 (sofia/outbound/.@...) Starting tone detection for '1' 2012-03-03 23:55:08.398205 [INFO] mod_spandsp_dsp.c:411 (sofia/outbound/.@...) initializing tone detector 2012-03-03 23:55:08.398205 [DEBUG] switch_core_media_bug.c:462 Attaching BUG to sofia/outbound/.@... 2012-03-03 23:55:10.218175 [INFO] mod_spandsp_dsp.c:422 (sofia/outbound/.@...) error reading frame 2012-03-03 23:55:10.218175 [INFO] mod_spandsp_dsp.c:447 (sofia/outbound/.@...) destroying tone detector ================================================ Any help would be appreciated. Thanks Jean-Marc. N.B. Sorry if some people received this e-mail twice. I am not sure this email went through the first time.