I think I have this straight, but I wanted to bounce it off anyone who might be more knowledgeable. We are installing an Asterisk server at a location that only has PRI. Inbound fax comes in on the PRI with its own DID. Currently, the PBX handling it just has a PRI port and sends calls for that DID to an FXS port that the fax machine is connected to. My plan was to use a Digium TE card for the PRI and a TDM card with an FXS port to connect the fax to. I know I'll need to use the fax detection feature to disable echo cancellation. I can't use the Zaptel "dacs" features because I won't know ahead of time which channel the fax calls will come in on (though I could potentially use it for outbound faxes). So the call path would look like this: PSTN ---> PRI ---> TExxx ---> Asterisk ---> TDMxxx FXS port ---> fax machine Does this sound reasonable? Any gotchas I should watch out for? -James
James Sneeringer wrote:> We are installing an Asterisk server at a location that only has PRI. > Inbound fax comes in on the PRI with its own DID. Currently, the PBX > handling it just has a PRI port and sends calls for that DID to an FXS > port that the fax machine is connected to. > >This will work fine> My plan was to use a Digium TE card for the PRI and a TDM card with an > FXS port to connect the fax to. I know I'll need to use the fax > detection feature to disable echo cancellation.No, Asterisk will detect the tones on it's own and disable EC.> PSTN ---> PRI ---> TExxx ---> Asterisk ---> TDMxxx FXS port ---> fax machine > > Does this sound reasonable? Any gotchas I should watch out for? >Yes. You may also want to look into HylaFAX+, it's a wonderful piece of software that will allow you to have more control over your faxes. Doug -- Ben Franklin quote: "Those who would give up Essential Liberty to purchase a little Temporary Safety, deserve neither Liberty nor Safety."
On Fri, 29 Aug 2008, Doug Lytle wrote:> James Sneeringer wrote: >> We are installing an Asterisk server at a location that only has PRI. >> Inbound fax comes in on the PRI with its own DID. Currently, the PBX >> handling it just has a PRI port and sends calls for that DID to an FXS >> port that the fax machine is connected to. > > This will work fineJust make sure you get the IRQs separated and you might want to think about a TDM410 rather than a TDM400 card. It did not work for me when I tried it with a TDM400 card - the PRI card would lose interrupts and eventually reset, dropping all calls. Gordon
I would suggest that you go with a dual port T1 card and a channel bank. you will have much greater fleibality as well as more stable connection. On 8/29/08, Gordon Henderson <gordon+asterisk at drogon.net> wrote:> On Fri, 29 Aug 2008, Doug Lytle wrote: > >> James Sneeringer wrote: >>> We are installing an Asterisk server at a location that only has PRI. >>> Inbound fax comes in on the PRI with its own DID. Currently, the PBX >>> handling it just has a PRI port and sends calls for that DID to an FXS >>> port that the fax machine is connected to. >> >> This will work fine > > Just make sure you get the IRQs separated and you might want to think > about a TDM410 rather than a TDM400 card. > > It did not work for me when I tried it with a TDM400 card - the PRI card > would lose interrupts and eventually reset, dropping all calls. > > Gordon > > _______________________________________________ > -- Bandwidth and Colocation Provided by http://www.api-digital.com -- > > AstriCon 2008 - September 22 - 25 Phoenix, Arizona > Register Now: http://www.astricon.net > > asterisk-users mailing list > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users >
C F wrote:> I would suggest that you go with a dual port T1 card and a channel > bank. you will have much greater fleibality as well as more stable > connection. >This is what we do. Along with an ADIT 600 (eBay special) Doug -- Ben Franklin quote: "Those who would give up Essential Liberty to purchase a little Temporary Safety, deserve neither Liberty nor Safety."
On Fri, Aug 29, 2008 at 11:06 AM, C F <shmaltz at gmail.com> wrote:> I would suggest that you go with a dual port T1 card and a channel > bank. you will have much greater fleibality as well as more stable > connection.Thanks for the tip. If faxing in this setup does prove to be unreliable, this is a good backup. -James
Doug Lytle wrote:> > This is what we do. Along with an ADIT 600 (eBay special) > >Just as a side note, I got very lucky on eBay and got my Adit and FXO 8 card for $50 each. I was tickled pink! Doug -- Ben Franklin quote: "Those who would give up Essential Liberty to purchase a little Temporary Safety, deserve neither Liberty nor Safety."