Hi all, I've read ticket #448 (http://trac.pjsip.org/repos/ticket/448) and I think I have a similar problem, but the media type is "image" and not "video". Bellow is the invite message: 2008-02 11 17:57:11.655 pjsua_core.c RX 1033 bytes Request msg INVITE/cseq=1 (rdata0x821b184) from UDP 10.160.65.16:5060: INVITE sip:3135287600 at 10.233.136.66:5060;transport=UDP;user=phone SIP/2.0 f: <sip:3192980553 at 10.160.65.16:5060;user=phone>;tag=00a-13c4-448067-392744b1-448067 t: <sip:3135287600 at 10.233.136.66:5060;user=phone> i: 859cf0401041a00a13c4448067b9594ae312264cdc0d3018-0460-6658 CSeq: 1 INVITE User-agent: CS2000_NGSS/9.0 P-Asserted-Identity: <sip:3192980553 at 10.160.65.16;user=phone> Max-Forwards: 140 k: 100rel Allow: ACK,BYE,CANCEL,INVITE,OPTIONS,INFO,SUBSCRIBE,REFER,NOTIFY,PRACK v: SIP/2.0/UDP BSA1CS2K:5060;maddr=10.160.65.16;branch=z9hG4bK-448067-b9594ae-205293e6 m: <sip:10.160.65.16:5060;transport=UDP> c: application/SDP l: 388 v=0 o=PVG 0 0 IN IP4 10.162.0.4 s=- p=+1 6135555555 c=IN IP4 10.162.0.4 t=0 0 m=audio 51498 RTP/AVP 18 8 101 a=rtpmap:101 telephone-event/8000 a=fmtp:101 0-15 a=ptime:20 a=fmtp:18 annexb=no m=image 59690 udptl t38 a=T38FaxVersion:0 a=T38FaxMaxBuffer:1100 a=T38FaxMaxDatagram:612 a=T38MaxBitRate:14400 a=T38FaxRateManagement:transferredTCF a=T38FaxUdpEC:t38UDPRedundancy and just after this my application rejects the call and the following messages comes in the log: 2008-02 11 17:57:11.671 pjsua_call.c Unable to create media session: Invalid media type (PJMEDIA_EINVALIMEDIATYPE) [status=220104] 2008-02 11 17:57:11.672 pjsua_core.c TX 827 bytes Response msg 488/INVITE/cseq=1 (tdta0x8230b58) to UDP 10.160.65.16:5060:SIP/2.0 488 Not Acceptable Here So pjsua (or pjsip, not sure) rejects the call with 488 - Not Acceptable Here. I think this is a similar case as the one shown in ticket 448, since we have the audio available. The call gets answered with no problem if I use x-lite to receive it. Thanks in advance, Thiago Abra sua conta no Yahoo! Mail, o ?nico sem limite de espa?o para armazenamento! http://br.mail.yahoo.com/