How is Vonage doing it? http://www.vonage.com/features_fax.php
John Breeden Hawaii > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] Behalf Of Steve > Underwood > Sent: Sunday, December 14, 2003 2:24 PM > To: [EMAIL PROTECTED] > Subject: Re: [Asterisk-Users] FAX, IAX and *....Maybe I'm dreaming...:-) > > > ProvoCityPower wrote: > > > The question asked here, "why on earth you want to push fax data over > > a VoIP link at > > all. Fax compression isn't very efficient." may speak volumes about > > the future role of VOIP. My plans are to role out a VOIP connection to > > thousands of Customers. Many have legacy fax equipment. Am I to assume > > that they will toss out their fax equipment and join the PC based > > faxing crowd? I don't think I can control this. If I am going to offer > > an aternative to the legacy wire providers then I have to offer a > > comparable service. One that for example allows a customer to use a > > legacy fax machine in the same way. > > > > If this thought sidetracks the intent of this thread, you have my > > apologies, but I do think that legacy fax functionality is essential. > > Legacy FAX will be very important for years. The last people to abandon > it are the most senior managers. Therefore, apart from anything else, > their buyin to a change to VoIP depends on keeping their olde worlde FAX > facilities alive. However, I think this has nothing to do with the > original poster's intent. > > Sending FAXes over IP as audio is dumb. Its troublesome, error prone, > and consumes too much bandwidth. The right way is to use a FAX modem to > translate between audio and the digital data stream of the image itself. > Then the compact image data can be conveyed reliably. If the far end is > not using IP, another modem can be used to return the FAX to its > analogue form for delivery. If you wish to interwork traditional > analogue FAX machines, with newer IP capable FAX machines you *have* to > do this. This is what the H323 protocols do. T.38 is the relevant FAX > over IP protocol. I don't know if there is a similar SIP standard, but > there should be. FAX to e-mail and e-mail to FAX is the other inportant > way to blend the old with the new. > > Regards, > Steve > > _______________________________________________ > Asterisk-Users mailing list > [EMAIL PROTECTED] > http://lists.digium.com/mailman/listinfo/asterisk-users > _______________________________________________ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users