[OpenSIPS-Users] can several SIP phones with same SIP account ring together and hang up asynchronous

[Carsten Bock]

Hi,

this is actually fully SIP/RFC compliant. By definition, any 6xx answer
provides the "ultimate, global answer", to put it in simple words: "I
cannot reply to the request and I know no one else can". On the contrary as
per the definition/RFC, a 5xx answer indicates,  that a single endpoint is
not able to handle the request (temporarily) due to technical reasons,
while others still may be able to answer this.

The right answer would be, that the SIP endpoint should respond with a 4xx
Answer to indicate that the call was declined on a user-based decision or
status (e.g. "busy").

I haven't tried this, but maybe you can check the following parameter:
https://opensips.org/docs/modules/3.4.x/tm.html#param_disable_6xx_block

This parameter should change the behavior on receiving a 6xx reply -
however, I never tried it myself.

Thanks,
Carsten




--
Carsten Bock I CTO & Founder

ng-voice GmbH

Trostbrücke 1 I 20457 Hamburg I Germany
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Managing Directors: Dr. David Bachmann, Carsten Bock


Am Di., 25. Okt. 2022 um 10:29 Uhr schrieb chenyzzzz via Users <
users at lists.opensips.org>:

> Hi Bogdan-Andrei,
>
> thanks for your reply. I had set up a opensips service on my Ubuntu 18.04.6 , and opensips version: opensips 3.2.6 (x86_64/linux).
>
> When I test that case,  I use two desktop linphone login same sip accout 01010101 (callee A/B).  and I use my Android linphone(caller C) invite A/B, A/B rings together which works well.
> but I hang up the callee  A ,  B also  terminated .
>
> I use wireshark to capture the packet on server side.  it show that :
> 1. when callee A(192.168.2.123) hand up, it respond 603 to the server(192.168.2.108)
> 2. server(192.168.2.108) forwards the respond 603 to caller C(192.168.2.115)
> 3. server(192.168.2.108) create a CANCEL to callee B(192.168.2.127)
> so, it seems opensips server CANCEL B automatically.
>
>
> My project need to meet the ability that callee A declines but callee B still ring.  I am a newbia to opensips, I don't know what is going on .  How to enable the ability as you say?
>
> Best Regards,
>
> Chen
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