[Kamailio-Users] Maximum retries exceed on transmission

[Klaus Darilion]

Am 05.02.2010 13:37, schrieb Jon Farmer:
>> U 2010/02/05 09:06:32.497347 10.100.0.101:5062 ->  10.0.255.10:5061
>> INVITE sip:12345 at 10.0.255.10:5061 SIP/2.0.
>> Contact:<sip:45400 at 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 at 10.100.0.106:5065 SIP/2.0.
>> Contact:<sip:45400 at 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

It does! The contact needs to addresses the user agent, not the proxy. 
(refer to RFC 3261)

klaus

> picked up.
>
> Regards
>
> Jon
>
>
>