[Asterisk-Users] Fax->Email for Hosted PBX

[Colin Anderson]

We use SpanDSP to recieve faxes on our PRI, a couple hundred a day with a
failure rate of ~5% which is pretty good I think but enough to tick people
off. Always the same fax numbers fail. What I did is have an exception list
context that is run just before RxFax. If the caller ID matches a "bad"
machine, the call is rerouted to a regular fax not off of a TDM or ATA but
forwarded to a POTS line (actually another channel on the same PRI - love
that Adtran!)

In my tests, routing thru VoIP or out thru a TDM or ATA just plain doesn't
work, or doesn't work enough for it to be usable. You wold serve your
customer best by having Asterisk with SpanDSP at the telco demarc rx the fax
directly, and avoid shunting the call to an ATA or TDM. 


-----Original Message-----
From: Alexander Lopez [mailto:alex.lopez at opsys.com]
Sent: Thursday, September 15, 2005 9:43 AM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: RE: [Asterisk-Users] Fax->Email for Hosted PBX


Best scenario does not route faxes over the IP network as a VoIP call.

You can either use spandsp as a fax on the Asterisk box, (has problems,
but the delveloper is behind solving them)

You can route the calls to a fax server located in the same colo via
tdm. (you can use HylaFax on Linix of any other solution.

I have used Fax over VoIP for about 2-3 years. Some machines can't
handle it. Others can.  Receiving has a higher success rate than
sending....



-----Original Message-----
From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Michael
Welter
Sent: Thursday, September 15, 2005 11:09 AM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: [Asterisk-Users] Fax->Email for Hosted PBX

I'm proposing to install an Asterisk PBX at a collocation facility for a

remote customer.  Each of the customer locations will have an SPA-3000 
with the FXO port connecting a POTS circuit and the FXS port connecting 
a fax machine or red phone.

In addition to voice traffic, the customer has a high volume of incoming

and outgoing faxes.

Would it be possible, using g711 between the SPA-3000 and server, to 
have spandsp/rxfax receive a fax from the POTS circuit via the SPA-3000?

  From the locally attached fax machine?  (I realize that packet loss 
will have a adverse effect on fax transmissions.)

Would I be better-off attaching the fax machines to a Mediatrix 2102?

Any help is appreciated.
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