I have a small server app that listens and sends DTMF digits. The null device [pjsua_set_null_snd_dev()] is very handy for this application since the machine is not equipped with a sound card. When I send DTMF digits using pjsua_call_dial_dtmf() I do not hear the DTMF digit on the receiving side. I have tested this on other machines with a sound card and it seems that if there is a regular sound device, the DTMF digit is heard, but after a call to pjsua_set_null_snd_dev() nothing is heard. Is there a way to send DTMF when using the null sound device? Best regards, Archie -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20081109/bc2bd10c/attachment.html>