[OpenSER-Users] INVITE NAT problem

[Iñaki Baz Castillo]

El Wednesday 09 July 2008 03:39:38 Juan Backson escribió:
> Hi,
>
> I am working on getting my two SIP phones behind firewall to talk to each
> other.   One client is SPA 921 and the other client is xlite; and I am
> force rport for all SIP requests from clients.

It seems innecesary since Xlite adds by itself "rport" parameter.


> When xlite sends a INVITE 
> request to openser, openser tries to send to SPA 921, but the PORT is still
> 5060, instead of 22848.

Why should it be 22848? the destination or source port? "22848" appears never 
in your trace. Why do you know it should be port 22848?



> Therefore, Openser keeps resending INVITE to SPA 
> 921 but never reaches it.

What I see is:

U 48.133.200.20:5060 -> 48.133.23.45:5060
INVITE sip:1005 at 48.133.23.45 SIP/2.0.

U 48.133.23.45:5060 -> 48.133.200.20:5060
INVITE sip:1005 at 48.133.23.45 SIP/2.0.

U 48.133.200.20:5060 -> 48.133.23.45:5060
INVITE sip:1005 at 48.133.23.45 SIP/2.0.

U 48.133.23.45:5060 -> 48.133.200.20:5060
INVITE sip:1005 at 48.133.23.45 SIP/2.0.

U 48.133.200.20:5060 -> 48.133.23.45:5060
INVITE sip:1005 at 48.133.23.45 SIP/2.0.

Extrange.


> Both linksys and xlite do send preiodic 
> SUBSCRIBE/NOTIFY to Openser.  Is there anything else I am missing?

That doesn't matter now.



-- 
Iñaki Baz Castillo
ibc at in.ilimit.es