I use FreeSWITCH Version 1.0.7 (hacked-20110418T002854Z) The following scenario FS-->TG-->PSTN FAX |Time |xxx.xxx.xxx.xxx | | | | xxx.xxx.xxx.xxx | |3.263 | INVITE SDP ( g711A telephone-event CN) |SIP From: sip:TCAPI_User@xxx.xxx To:sip:12334@xxx.xxx.xxx.xxx | |(5060) ------------------> (2080) | |3.323 | 100 Trying| |SIP Status | |(5060) <------------------ (2080) | |5.362 | 183 Session Progress SDP ( g711A) |SIP Status | |(5060) <------------------ (2080) | |5.372 | 183 Session Progress SDP ( g711A) |SIP Status | |(5060) <------------------ (2080) | |5.439 | RTP (g711A) |RTP Num packets:577 Duration:11.520s SSRC:0xDA48CD22 | |(31962) <------------------ (6276) | |5.697 | RTP (g711A) |RTP Num packets:283 Duration:5.639s SSRC:0x4896FE5 | |(31962) ------------------> (6276) | |11.338 | 200 OK SDP ( g711A) |SIP Status | |(5060) <------------------ (2080) | |11.339 | ACK | |SIP Request | |(5060) ------------------> (2080) | |11.357 | RTP (g711A) |RTP Num packets:281 Duration:5.620s SSRC:0x4896FE5 | |(31962) ------------------> (6276) | |16.986 | UPDATE SDP ( t38) |SIP Request | |(5060) <------------------ (2080) | |16.986 | 200 OK SDP ( g711A telephone-event CN) |SIP Status | |(5060) ------------------> (2080) | |53.000 | BYE | |SIP Request | |(5060) ------------------> (2080) | |53.064 | 200 OK | |SIP Status | |(5060) <------------------ (2080) | How should I set FS？ Thank you！ -- View this message in context: http://freeswitch-users.2379917.n2.nabble.com/T-38-via-UPDATE-request-tp3821... Sent from the freeswitch-users mailing list archive at Nabble.com.