[hylafax-users] how to connect FAX server (Asterisk + hylafax+iaxmodem) to SIP server of provider

Georg Schönweger

2011-08-05 06:42:21 UTC

Hi,

you propably have an incoming context for your SIP provider and an
outgoing context for your IAX modem's.

; receiving fax (incoming context of SIP provider defined in
/etc/asterisk/sip.conf)
[incoming-sip]
exten => 123,1,Answer()
exten => 123,n,Dial(IAX2/iaxmodem2)
exten => 123,n,Dial(IAX2/iaxmodem3)
exten => 123,n,Hangup
; replace 123 with your incoming FAX number assigned by your SIP provider.

; sending fax (outgoing context of iaxmodems defined in
/etc/iaxmodem/ttyIAX*)
[fax-out]
exten => _X.,1,Dial(SIP/${EXTEN}@sip_provider_account)
exten => _X.,n,Hangup()

I never tried that out but IMO it could lead to problems when
sending/receiving Faxes via SIP provider because of architecture of SIP
protocol. Thats why they created T.38, may you should google a bit for
"T.38". I never implemented that because we have ISDN Lines connected to
our Asterisk...

- Georg

Post by devel tech
Hi all!
can some one guide me how can i connect my FAX server (Asterisk +
Hylafax+IAXMODEM ) to SIP server of provider. what i need for this ? and what i
have to change in Asterisk Dial plan for sending and receiving FAX on SIP trunk.
Regards
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