[asterisk-users] T38 faxing - UDPTL creation failed

[Danny Nicholas]

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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