We use a freeswitch as a relay between our carriers
and other freeswitches, it has worked great until we upgraded to the
latest freeswitch version recently
We we receive a fax, inbound and relay it, the
subsequent re invite we get back looks like the frist block below, then when the
freeswitch relays it, it adds
in " Media Description, name and address (m):
audio 0 RTP/AVP 19". The originating carrier sees this and responds with
audio instead of T38, the call drops.
Any hints would be greatly appreaciated, I do
not really want to go back to a previous release if I can avoid it.
Connection Information (c): IN IP4
98.158.137.200
Time Description, active time (t): 0
0
Media
Description, name and address (m): image 18392 udptl
t38
Media
Attribute (a):
T38FaxVersion:0
Media Attribute (a):
T38MaxBitRate:14400
Media Attribute (a):
T38FaxFillBitRemoval
Media Attribute (a):
T38FaxRateManagement:transferredTCF
Media Attribute (a):
T38FaxMaxBuffer:2000
Media Attribute (a):
T38FaxMaxDatagram:400
Media Attribute (a): T38FaxUdpEC:t38UDPRedundancy
Connection Information (c): IN IP4
98.158.137.200
Time Description, active time (t): 0
0
Media
Description, name and address (m): audio 0 RTP/AVP
19
Media
Description, name and address (m): image 18392 udptl
t38
Media
Attribute (a):
T38FaxVersion:0
Media Attribute (a):
T38MaxBitRate:14400
Media Attribute (a):
T38FaxFillBitRemoval
Media Attribute (a):
T38FaxRateManagement:transferredTCF
Media Attribute (a):
T38FaxMaxBuffer:2000
Media Attribute (a):
T38FaxMaxDatagram:400
Media Attribute (a): T38FaxUdpEC:t38UDPRedundancy
Darcy
Voice2Net