[OpenSIPS-Users] Issues with ACK with 2 NIC opensips + GW behind NAT

[oso che bol]

Hi IBC, bogdan,

I capture on UA 1 (caller)
1. Invite from caller send to opensips
2. opensips send to caller 100 Give a try
3. Opensips send 200 OK with SDP to Caller
4. RTP setup between Caller and RTPPRoxy
5. Caller send ACK to SIP_GW_PRIVATE_IP (that break here )

Could you please explain why ACK do not go through Opensips?
Thanks,
-LN

On Mon, May 4, 2009 at 5:26 PM, Iñaki Baz Castillo <ibc at aliax.net> wrote:

> 2009/5/4 oso che bol <ndlgroup1 at gmail.com>:
> > Expected Result:
> > - When Opensips go to Route 2 (not found user route), it invoke INVITE,
> NAT
> > processing and go to on_reply_route[2], it expect ACK. But it confirmed
> in
> > logs console that "It's late for local ACK", "no transaction found"
>
> As you can see in the SIP flow capture, OpenSIPS is not sending the
> 200 upstream to the caller, so GW retransmits it waiting for the ACK.
> You should investigate why OpenSIPS os not relaying the 200 to the caller.
>
> --
> Iñaki Baz Castillo
> <ibc at aliax.net>
>
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