as He is describing it he should actually provide t.38. but i don't know why it is not working thus im now getting

Feb 3 12:32:55] WARNING[9942][C-00000004]: chan_sip.c:10353 process_sdp: Failed to initialize UDPTL, declining image stream [Feb 3 12:32:55] WARNING[9942][C-00000004]: chan_sip.c:10497 process_sdp: Insufficient information in SDP (c=)...
and then the fax session starts recording data

Am 03.02.2014 12:34, schrieb Larry Moore:
On 3/02/2014 7:15 PM, Jakob-Matthias Böttger wrote:
Hi, changing

faxdetect=cng
and
t38pt_udptl=no

helped making it work.


Hmm, the fax will be received as an audio call rather than T.38, setting t38pt_udptl=no has turned off T.38.

Do you know if your upstream provider supports T.38?

Larry.



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