5 Feb
2010
5 Feb
'10
11:36 a.m.
Hi
I am getting this dreaded error on a asterisk box when call from one
UA to another using Asterisk as a media relay and openser as a SBC and
proxy. If I make a call from a UA to the PSTN through Asterisk all is
fine. This only happens when calling from one UA to another on the
same LAN.
I have posted an example sip trace here http://pastebin.com/m2262b0ef
My openser.cfg is here http://pastebin.com/d5e84aaf7
I realise this is a issue with Asterisk but I have not been able to
find a fix. Therefore I figure there might be something I can do on
openser. The problem seems to be with a ACK not being returned but my
SIP knowledge is not good enough to know how to fix it. Any help is
greatly appreciated.
Regards
Jon
--
Jon Farmer
Tel: 07795 118140
Email: viperdudeuk(a)gmail.com
Twitter: @viperdudeuk
5 Feb
5 Feb
12:47 p.m.
In the proxy you are rewriting the Contact -> that causes the problem.
klaus
Am 05.02.2010 10:36, schrieb Jon Farmer:
Hi
I am getting this dreaded error on a asterisk box when call from one
UA to another using Asterisk as a media relay and openser as a SBC and
proxy. If I make a call from a UA to the PSTN through Asterisk all is
fine. This only happens when calling from one UA to another on the
same LAN.
I have posted an example sip trace here http://pastebin.com/m2262b0ef
My openser.cfg is here http://pastebin.com/d5e84aaf7
I realise this is a issue with Asterisk but I have not been able to
find a fix. Therefore I figure there might be something I can do on
openser. The problem seems to be with a ACK not being returned but my
SIP knowledge is not good enough to know how to fix it. Any help is
greatly appreciated.
Regards
Jon
1:53 p.m.
Here the details:
U 2010/02/05 09:06:32.497347 10.100.0.101:5062 -> 10.0.255.10:5061
INVITE sip:12345@10.0.255.10:5061 SIP/2.0.
Contact: <sip:45400@10.100.0.101:5062>.
U 2010/02/05 09:06:32.521248 10.0.255.10:5061 -> 10.100.0.106:5065
INVITE sip:12345@10.100.0.106:5065 SIP/2.0.
Contact: <sip:45400@10.0.255.10:5060>.
Actually I do not see in your config that the Contact is rewritten.
Either there is something strange with your config, or maybe there is a
SIP ALG somewhere inbetween which mangels the contact headers.
regards
klaus
PS: Please always Cc: the mailing list
2:37 p.m.
U 2010/02/05 09:06:32.497347 10.100.0.101:5062 ->
10.0.255.10:5061
INVITE sip:12345@10.0.255.10:5061 SIP/2.0.
Contact: <sip:45400@10.100.0.101:5062>.
So this is the invite from the calling party to openser
U 2010/02/05 09:06:32.521248 10.0.255.10:5061 -> 10.100.0.106:5065
INVITE sip:12345@10.100.0.106:5065 SIP/2.0.
Contact: <sip:45400@10.0.255.10:5060>.
And this is the invite from openser to the called party.
The Contact is rewritten to openser. I don't see how this is causing a
problem. The issue seems to arrive later when the ACK doesn't get
picked up.
Regards
Jon
--
Jon Farmer
Tel: 07795 118140
Email: viperdudeuk(a)gmail.com
Twitter: @viperdudeuk
2:39 p.m.
Am 05.02.2010 13:37, schrieb Jon Farmer:
It does! The contact needs to addresses the user agent, not the proxy.
(refer to RFC 3261)
klaus
U 2010/02/05
09:06:32.497347 10.100.0.101:5062 -> 10.0.255.10:5061
INVITE sip:12345@10.0.255.10:5061 SIP/2.0.
Contact:<sip:45400@10.100.0.101:5062>.
So this is the invite from the calling party to openser
U 2010/02/05 09:06:32.521248 10.0.255.10:5061 -> 10.100.0.106:5065
INVITE sip:12345@10.100.0.106:5065 SIP/2.0.
Contact:<sip:45400@10.0.255.10:5060>.
And this is the invite from openser to the called party.
The Contact is rewritten to openser. I don't see how this is causing a
problem. The issue seems to arrive later when the ACK doesn't get picked up.
Regards
Jon
2:53 p.m.
2010/2/5 Jon Farmer <viperdudeuk(a)gmail.com>om>:
The Contact is rewritten to openser. I don't see
how this is causing a
problem. The issue seems to arrive later when the ACK doesn't get
picked up.
Please, read the RFC 3261, understand how SIP works and then you can
ensure what the error is.
--
Iñaki Baz Castillo
<ibc(a)aliax.net>
5404
days inactive
5404
days old
5 comments
3 participants
participants (3)
-
Iñaki Baz Castillo -
Jon Farmer -
Klaus Darilion