hi wanted to use G.722 with a Siemens Gigaset C470IP. It was all the time using G.729 so i've removed all codecs but G.722 in codec list. which lead me to INCOMPATIBLE_DESTINATION. output of "/log 7" on fs_cli 2010-11-30 17:41:26.216025 [DEBUG] sofia.c:4579 Remote SDP: v=0 o=1001 5012 72 IN IP4 192.168.236.161 s=Mapping c=IN IP4 192.168.236.161 t=0 0 m=audio 5012 RTP/AVP 101 a=rtpmap:101 telephone-event/8000 a=fmtp:101 0-16 2010-11-30 17:41:26.216025 [DEBUG] sofia_glue.c:4367 Audio Codec Compare [telephone-event:101:8000:0:0]/[G729:18:8000:20:8000] This leads me to the maybe inaccurate conclusion that Siemens Gigaset sends 101 for G.722 what freeswitch translates to telephone-event (according to vars.xml 101 is telephone-event). Reading further http://wiki.freeswitch.org/wiki/RTP_payload_list G.722 should have id 9. Am I right, that Siemens is wrong? - Thomas