[OpenSIPS-Users] Strange ACK between OpenSIPS and Kamailio

Alex Balashov abalashov at evaristesys.com
Thu Nov 9 14:17:17 UTC 2023


1) Neither Kamailio nor OpenSIPS send 200 OKs;

2) Neither Kamailio nor OPenSIPS send ACKs.

They merely relay these.

3) Contact URI alterations may be occurring along the chain, and are likely causing your issue.

-- Alex

> On 9 Nov 2023, at 09:12, Social Boh <social at bohboh.info> wrote:
> Hello list,
> I have a problem in communication between an OpenSIPs and a Kamailio. The call comes from OpenSIPs to Kamailio, it is answered but the ACK that OpenSIPs sends to Kamailio I think is not correct:
> 200OK from Kamailio to OpenSIPs: Contact: <sip:194.195.XXX.XXX:49999>
> ACK from OpenSIPs to Kamailio: Contact: <sip:user at 177.242.XXX.XXX;did=86a.799c1654>
> I think the ACK Contact Header from OpenSIPs to Kamailio should have the same 200 OK content 
> 194.195.XXX.XXX is a Asterisk PBX
> 177.242.XXX.XXX is OpenSIPs
> Result Kamailio don't send ACK to Asterisk PBX and the call ends about 30 seconds.
> Any hint, please?
> -- 
> ---
> I'm SoCIaL, MayBe
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Alex Balashov
Principal Consultant
Evariste Systems LLC
Web: https://evaristesys.com
Tel: +1-706-510-6800

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