Res_fax – FAXOPT(faxdetect)

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Asterisk Users 4 Comments


as stated in the documentation, it’s allowed to set FAXOPT(faxdetect)=yes/no to allow fax detection.

It’s done (see below) but still fax detection 🙁 Extension 300 is hylafax with iaxmodem.

On the upper Asterisk gw it’s the same, despite the faxdetect set to no we also have the NOTICE of T.38 re-INVITE. Test is done with a mobile phone calling the 0123456789 PSTN number.

— Executing [0123456789@from-internal:1]
Set(“SIP/TOOTAi-00008262”, “FAXOPT(faxdetect)=no”) in new stack
— Executing [0123456789@from-internal:2]
Macro(“SIP/TOOTAi-00008262”, “Fax”) in new stack
— Executing [s@macro-Fax:1] Dial(“SIP/TOOTAi-00008262”,
“IAX2/300,,”) in new stack
— Called IAX2/300
— Call accepted by (format alaw)
— Format for call is (alaw)
— IAX2/300-7211 is ringing
— IAX2/300-7211 answered SIP/TOOTAiAudio-00008262
== Using UDPTL TOS bits 184
== Using UDPTL CoS mark 5
[2015-02-17 16:52:51] NOTICE[3467][C-00001d5b]: chan_sip.c:10645
process_sdp: T.38 re-INVITE detected but no fax extension
[2015-02-17 16:52:56] WARNING[3467][C-00001d5b]: chan_sip.c:9868
process_sdp: Insufficient information for SDP (m= not found)
— Executing [h@from-internal:1] Hangup(“SIP/TOOTAi-00008262”, “”)
in new stack
== Spawn extension (from-internal, h, 1) exited non-zero on
— Hungup ‘IAX2/300-7211’

Thanks for your support

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