[Freeswitch-users] T.38 via UPDATE request

[tangdu]

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 at xxx.xxx To:sip:12334 at 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！


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