OK so I tried running the application with each of the available codecs in turn (by setting priority 0 for the others), and it seems that GSM is the only codec that is working with the PDAs. I've added the following line to improve sound quality to config_site.h: #define PJMEDIA_SOUND_BUFFER_COUNT 16 The sound quality is not very good and I want to try to improve it further. There is a delay of 1 or 2 seconds at times and audio dropouts as well. The CPU Utilization is low so that's not an issue. I did not find any audio underflows/overflows either. What else can I do? And anyway, how can I make the other codecs work? The current behavior is either crash of application (on pcma and pcmu) or a weird humm [very bad understandable voice] (for speex/8000,speex/16000,speex/32000, and ilbc). The clock rate is the default of 8000 Hz. ______________________________________ Samer M. Faour Computer and Communications Engineering American University of Beirut P.O. Box 11-0236/ 1461 Riad el Solh Square 1107 - 2020 Email: smf18 at aub.edu.lb ----------------------------------------------------------------
