[Cialug] Asterisk Bridged Fax Calls

[Jonathan C. Bailey]

The Comdial hardware is an FX-II PBX. The machine is lightly loaded and nothing is sharing interrupts. Also, the machine has pretty high end hardware for what Asterisk NEEDS (Athlon X2 5000+, 1GB RAM, RAID).

-Jon

----- Original Message -----
From: "Nathan C. Smith" <nathan.smith at ipmvs.com>
To: "Central Iowa Linux Users Group" <cialug at cialug.org>
Sent: Thursday, November 15, 2007 1:19:35 PM (GMT-0600) America/Chicago
Subject: RE: [Cialug] Asterisk Bridged Fax Calls

I've been giving it some more thought.  The problem is going to happen on
several layers.

You have the fax machines that expect to be talking directly to each other
expecting exact times, and you may have T1 timing issues as well.  You may
also have zaptel timing issues if the machine cannot keep up or has crappy
interrupts

Asterisk should be salve to the telco and master for the other span.  Is a
comdial a channel bank or something else?

-Nate 

> -----Original Message-----
> From: Jonathan C. Bailey [mailto:jbailey at co.marshall.ia.us] 
> Sent: Thursday, November 15, 2007 1:16 PM
> To: Central Iowa Linux Users Group
> Subject: Re: [Cialug] Asterisk Bridged Fax Calls
> 
> Well, I did a few things.. Turning echo cancellation off on 
> bridged calls didn't help. I did notice that while I was 
> slave to the telco for timing, I was also set as slave to our 
> legacy PBX. I changed it to master, but haven't tested it yet.
> 
> Jonathan Bailey
> Webmaster, Marshall County, Iowa
> E: jbailey at co.marshall.ia.us
> A: 1 E Main St, Marshalltown, IA 50158
> P: 641-844-2804
> C: 515-988-1021
> 
> ----- Original Message -----
> From: "Nathan C. Smith" <nathan.smith at ipmvs.com>
> To: "Central Iowa Linux Users Group" <cialug at cialug.org>
> Sent: Thursday, November 15, 2007 1:11:05 PM (GMT-0600) 
> America/Chicago
> Subject: RE: [Cialug] Asterisk Bridged Fax Calls
> 
> yup.  you are probably going to have timing issues with that 
> kind of setup. 
> 
> -Nate
> 
> > -----Original Message-----
> > From: Jonathan C. Bailey [mailto:jbailey at co.marshall.ia.us] 
> > Sent: Thursday, November 15, 2007 12:14 PM
> > To: Central Iowa Linux Users Group
> > Subject: [Cialug] Asterisk Bridged Fax Calls
> > 
> > Has anyone out there seen problems with 14.4k fax machines 
> > and bridged calls? We're passing the call like this: T1 PRI 
> > (telco) -> Asterisk -> T1 PRI (Comdial) -> Analog extension. 
> > Remove the asterisk box and all is fin, but with the box 
> > there, we get some weirdness due to error correction.
> > 
> > -Jon
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