It's a Zaptel thing. That's why you put faxdetect=yes in Zapata.conf. When Zaptel "hears" the fax tone, it shuts off echo cancellation and tells Asterisk to shunt the call to the "fax" extension.
If you are using PRI, for reliable fax detection, you should have something like this in your default inbound context exten => s,1,Answer() exten => s,2,Wait(3) The reason you Wait() for 3 seconds is because of the cadence of the fax tone. Because Zaptel hardware answers the call and start processing it almost instantaneously, it starts processing the call as a voice call. Because the cadence of the tone is something like 2 seconds on, 2 seconds off, a whole bunch of stuff can happen in your Asterisk box before it hears the fax tone. If you jump to another context without having a fax extension in that context, and then Zaptel hears the fax tone, a lot of your fax calls will fail or an internal extension will ring, then as the user picks up, Asterisk goes to the fax extension, and the call to the user is terminated. This is also a double edged sword: We had a realtor who would call us up while faxing stuff on his fax machine with the speaker on (who DOES that, anyway?) Asterisk would pick up, do it's wait() and would hear the realtor's fax machine in the background, and jump to the fax extension. Fun to troubleshoot. If you are using analog hardware, I'm not sure the wait() is necessary because of the relative slowness of the call setup (i.e. it waits anyway for the Caller ID) -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Thursday, December 15, 2005 3:41 AM To: Colin Anderson Cc: [email protected] Subject: RE: [Asterisk-Users] Fax detected, but no fax extension OK, Is Asterisk able to switch incoming calls according to fax or voice to the right extension . Which function detect incoming signal ? Regards H.G --- Colin Anderson <[EMAIL PROTECTED]> a écrit : > You need an extension called "fax" in your [fax] > context like this: > > [fax] > exten => fax,1,Goto(macro-faxreceive,s,1) > > hth > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] > Sent: Wednesday, December 14, 2005 3:18 PM > To: [email protected] > Subject: [Asterisk-Users] Fax detected, but no fax > extension > > Hello, > > I get this message when i send fax "Fax detected, > but > no fax extension". > I read mailing list . > > Can we solve this ? > > my conf : > > =PSTN==(fxo)-Asterisk-(fxs)==Hylafax==SMTP/POP3 > server > > zapata.conf: > context=fax > faxdetect=both > signalling=fxo_ks > group=2 > channel => 2 > > > extension.conf > [fax] > exten => 80,1,Dial(Zap/2) > ingnorepat => 0 > include => outgoing-pstn > > [outgoing-pstn] > exten => _0XXXX,1,Dial(Zap/g1/${EXTEN:1}) > exten => _0XXXX.,1,Dial(Zap/g1/${EXTEN:1}) > > Regards > > H.G > > > > > > > ___________________________________________________________________________ > Nouveau : téléphonez moins cher avec Yahoo! > Messenger ! Découvez les tarifs > exceptionnels pour appeler la France et > l'international. > Téléchargez sur http://fr.messenger.yahoo.com > _______________________________________________ > --Bandwidth and Colocation provided by Easynews.com > -- > > Asterisk-Users mailing list > To UNSUBSCRIBE or update options visit: > > http://lists.digium.com/mailman/listinfo/asterisk-users > ___________________________________________________________________________ Nouveau : téléphonez moins cher avec Yahoo! Messenger ! Découvez les tarifs exceptionnels pour appeler la France et l'international. Téléchargez sur http://fr.messenger.yahoo.com _______________________________________________ --Bandwidth and Colocation provided by Easynews.com -- Asterisk-Users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users _______________________________________________ --Bandwidth and Colocation provided by Easynews.com -- Asterisk-Users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
