I have trouble with fax because the INVITE generated by FS doesn't contain the image part.
In my profile I have set:
<param name="t38-passthru" value="true" />
and the dialplan (simplified) is:
<action application="export" data="t38_passthru=true"/>
<action application="bridge" data="sofia/external/xxxx" />
but when is received an INVITE with SDP:
v=0
o=- 2598299616 0 IN IP4 213.204.31.103
s=session
t=0 0
m=audio 4640 RTP/AVP 18 8 96
c=IN IP4 213.204.31.32
a=rtpmap:18 G729/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:96 telephone-event/8000
m=image 4642 udptl t38
c=IN IP4 213.204.31.32
a=T38FaxVersion:0
a=T38MaxBitRate:14400
a=T38FaxUdpEC:t38UDPRedundancy
a=T38FaxRateManagement:transferredTCF
is generated in the outbound leg an SDP:
v=0
o=FreeSWITCH 1328751960 1328751961 IN IP4 217.19.146.173
s=FreeSWITCH
c=IN IP4 217.19.146.173
t=0 0
m=audio 31196 RTP/AVP 18 8 0 101 13
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-16
a=ptime:20
without image part.
Here the log:
Any advice?