[Asterisk-Users] Fax with SPA-2000's?

Lee Howard faxguy at howardsilvan.com
Thu Jun 24 09:26:46 MST 2004

On 2004.06.23 12:19 Lee Howard wrote:
> On 2004.06.18 23:15 Seth Mattinen wrote:
>> I've been trying to get fax reception to work using an SPA-2000 to 
>> ring the fax machine or modem that's taking fax calls. I was curious 
>> if anyone else had tried something similar, and if so, had any luck 
>> getting it to work reliably. I've been able to get it to work, but 
>> it isn't reliable. (Pages/lines of black dots result more frequently 
>> than not.) The incoming lines are FXO and going to something digital 
>> isn't an option. My setup looks like this:
>> POTS <---> X100P FXO <--> Asterisk <--> SPA-2000 SIP <--> Fax
> I've got the same configuration, and it works fine, but I had to 
> disable V.17 (i.e, 14400 baud).  V.27, V.29, and *V.34* all seem work 
> just fine, however.  There seems to be some kind of incompatibility 
> between Asterisk and V.17 (this isn't surprising, many PBXs screw up 
> V.17 communications).

I stand corrected.

After a little bit of work with the fax application to adjust the 
timings (increasing all of the pauses), all is well with V.17 also.


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