[Asterisk-Users] rxfax over IAX ulaw

[Steve Underwood]

Hi Darell,

If FAX works over ulaw over SIP or IAX it is by luck and not by design. 
Don't expect it to work, though it often does.

Regards,
Steve


Darrell Collins wrote:

> I am having a problem receiving faxes over an IAX connection. If I use 
> SIP it works fine.
>
> I am running Asterisk 1.0.7. I have an inbound IAX line form 
> VoicePluse that I have going directly to rxfax
>
>  
>
> exten => s,1,rxfax(/var/spool/asterisk/fax/testfax.tif).
>
>  
>
> The modem in my laptop connects to the VoicePluse line and I hear the 
> modem tones start and about
>
> 20 seconds later I get a Fatal error in the Fax Manager the output 
> from the asterisk console is
>
>  
>
> -- Accepting AUTHENTICATED call from 66.234.228.170, requested format 
> = 4, actual format = 4
>
> -- Goto (testfax,s,1)
>
> -- Executing RxFAX("IAX2/voicepulse-in-01 at 66.234.228.170:4569/5", 
> "/var/spool/asterisk/fax/testfax.tif") in new stack
>
>  
>
> then about a 2 minutes later I get
>
>  
>
> -- Hungup 'IAX2/voicepulse-in-01 at 66.234.228.170:4569/5'
>
>  
>
> I have tried this with Asterisk 1.0.3 and get the same results.
>
>  
>
> I thought it might be a problem with VoicePluse so I connected 2 
> asterisk servers using an IAX connection and
>
> a SIP adapter connect to my laptop and I get the same result. If I 
> connect the SIP adapter directly to asterisk and use just SIP
>
> The fax is received fine.
>
>  
>
> Just wondering if anyone else has been able to get this to work or any 
> suggestions.
>
>  
>
> Thanks
>
> Darrell Collins
>
>    
>
>   
>
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