From my experience, Fax and some postal machines and modems are a real issue.
These work on the old modulation type of communication and fax especially, has issues with data. There has been users who were successful as long as both locations have t.38 support. But for me, I have just plain given up. If you can roll the fax from home to a PDF, the transfer it to your asterisk box with a call function and have it send it from there is really the only effective way. Otherwise, back to pstn. Basically, you start the fax at home, it captures the call with a IAX type of port converted with a t38 software function. then you pass the file it creates to your main asterisk box and that unit uses the pstn connection. If you have asterisk at both locations, you can setup hylafax on each. at home, the asterisk box grabs the call, creates a file with the phone number in it. can be tiff or pdf and then drops that file into a polled directory on your asterisk box at 151. that box picks up the file and sends the fax. The unit at 151 sends you an email confirmation. Not an easy setup, but definitely do able with hylafax. On 2010-10-29, at 12:28 AM, TAUG subscriber wrote: > Thanks for the input. > > I am getting faxes into asterisk fine, but from other PSTN connected faxes. > The problem is being at home (without a Bell line) and trying to fax out to > either my asterisk box at 151 front, or another PSTN attached fax machine > with a PAP2 over Cogeco cable. The internet connection works very well for > voice, basically perfect as far as I can tell, but fax fails 100% of the > time, it doesn't even start to communicated. > > My PAP2 makes the call and it starts fax tones and then I get a re-order > signal. I tried sending to a TDM faxing service that I still control (NMS > on PRI) and the message says that the far end (my home fax) hung up, but > seemingly that's not the case as I can hear the device still has hold of the > line. It's a real fax machine (Samsung CLX-6200FX) not software on windoze. > > Erik. > > -----Original Message----- > From: John Lange [mailto:j...@johnlange.ca] > Sent: Friday, October 29, 2010 12:02 AM > To: TAUG subscriber > Subject: Re: [on-asterisk] fax over IP > > You should use a T38 capable ATA (e.g. SPA2102). > > If you are faxing to the PSTN, you'll need a T38 capable gateway which > can be asterisk but requires PSTN card of some kind and the T38 add-on > and license from digium. > > If you have an external device as your PSTN gateway (for example a > Cisco router with a PRI card), then you don't need anything on the > Asterisk server except allowing T38 pass-through. > > If you are doing SIP-to-SIP then just two T38 ATAs will work with > asterisk in T38 pass-through mode. > > If you buy service from a VOIP provider, most are now T38 capable so > all you need is the T38 capable ATA. (the PAP2 & PAP2T do _NOT_ have > T38 despite what you might find in a google search). > > You can force g711 and all the settings you mentioned and it will > sometimes work, but bottom line; you'll never get more than a few > pages through at a time if you're lucky. > > John > > On Thu, Oct 28, 2010 at 9:51 PM, TAUG subscriber <t...@fubutel.net> wrote: >> Does anybody have any usable settings for a Linksys PAP2 ATA over > DSL/cable >> to fax into asterisk? Doing some research online kind of suggests that > fax >> over IP is not reliable and in many cases doesn't work (like mine). I'd >> purchase any ATA really to get this to work. >> >> I've forced G711u only, disabled silence suppression, echo cancellation > off. >> >> However I don't understand: >> - FAX codec symmetric >> - FAX passthru method >> - FAX CNG detect enable >> - FAX CED detect enable >> - FAX disable ECAN >> >> Can anybody explain and/or relate their experiences. I also checked the >> discussion in Aug 2009, but it wasn't particularly helpful either. >> >> Thanks, >> Erik. >> >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: asterisk-unsubscr...@uc.org >> For additional commands, e-mail: asterisk-h...@uc.org >> >> > > > > -- > John Lange > www.johnlange.ca > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: asterisk-unsubscr...@uc.org > For additional commands, e-mail: asterisk-h...@uc.org > --------------------------------------------------------------------- To unsubscribe, e-mail: asterisk-unsubscr...@uc.org For additional commands, e-mail: asterisk-h...@uc.org
