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kle at bluewin.ch
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 Posted: Fri Feb 12, 2016 9:25 am Post subject: [asterisk-users] Incoming Fax Issue with Asterisk 11.7 and D |
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Larry Moore <lmoore <at> omninet.net.au> writes:
| Quote: |
sip.conf
[general]
faxdetect=t38
[sipcall.ch]
directmedia=no
In extensions.conf change Wait(2) to Wait(5), if your VSP sends you a
T.38 re-invite this will trigger the switch to the Fax extension.
If this proves successful you can work on removing the Wait() from your
dialplan as Asterisk will remain in the audio path and should
successfully switch to the fax extension if extension 200 or 201 answer
a call that happens to be a fax.
Larry.
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Hi to all
Sorry to bump this old thread. Well, I found a while ago finally the reason
why T.38 doesn't work in conjunction with Swiss VoIP provider sipcall.
Despite T.38 is stated as "supported", that provider does NOT support T.38.
Their T.38 gateway has some fundamental negotiation problems, - it "exceeds
the T4 timer of the T.30 protocol". Therefore, T.38 faxing does not work.
http://wiki.innovaphone.com/index.php?title=Howto:Sipcall_business_-_SIP_Provider_Compatibility_Test
Sipcall has confirmed me that they work now on a solution. Will see...
Kind regards,
Clemens
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