[asterisk-users] T38 faxing - UDPTL creation failed

[Danny Nicholas]

Maybe you should change your values in udptl.conf?   By default the range is
4000 to 4099, but is effectively 4001 to 4099 because the protocol doesn't
use even numbers by default, so it runs out of entries in 500 tries.

-----Original Message-----
From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of "????????"
Sent: Thursday, February 02, 2012 1:35 PM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: [asterisk-users] T38 faxing - UDPTL creation failed

Good question.
I can't simulate it right now so I will try it today or so...But I'm not
expecting, that it help, because I tried couple of ways before and restart
was the only way.

But thanks anyway. Any other ideas?


> What happens if you do a "SIP RELOAD" instead of restarting Asterisk?
>
> -----Original Message-----
> From: asterisk-users-bounces at lists.digium.com
> [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of "????????"
> Sent: Thursday, February 02, 2012 1:14 PM
> To: asterisk-users at lists.digium.com
> Subject: [asterisk-users] T38 faxing - UDPTL creation failed
>
> Hello guys.
>
> When I am trying to send fax through T38 to linksys SPA (properly 
> configured etc. - I have tried it with other systems), I'm getting 
> error and fax is not delivered.
>
> I'm getting this errors in asterisk.log:
> WARNING[687] udptl.c: No UDPTL ports remaining ERROR[687] chan_sip.c:
> UDPTL
> creation failed WARNING[687] udptl.c: No UDPTL ports remaining
>
> then, couple lines down:
> WARNING[3514] chan_sip.c: Unsupported SDP media type in offer: image 
> 16400 udptl t38 WARNING[3514] chan_sip.c: Failing due to no acceptable 
> offer found
>
> sip_general_custom.conf contains t38pt_udptl=yes
>
> udptl.conf contains:
> [general]
> udptlstart=4000
> udptlend=4999
> T38FaxUdpEC = t38UDPRedundancy
>
> Asterisk version is 1.8.5.0
>
> When I restart asterisk, everything is working good. Then, after some 
> time, fax stop working.
> Do you have any idea what it could be?
>
> Thanks in advance.
>
>
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