[OpenSIPS-Users] problem in call forwarding scenario

[Bogdan-Andrei Iancu]

Hi Kamlesh,

Different TO-tag in provisional replies is perfectly legal from the SIP 
RFC3261 and the originator must accept that.

Regards,

Bogdan-Andrei Iancu

OpenSIPS Founder and Developer
   https://www.opensips-solutions.com
OpenSIPS Summit, Amsterdam, May 2020
   https://www.opensips.org/events/Summit-2020Amsterdam/

On 4/4/20 9:10 PM, Kamlesh . wrote:
> Dear All,
>
> version: opensips 2.4.6 (x86_64/linux)
>
> flags: STATS: On, DISABLE_NAGLE, USE_MCAST, SHM_MMAP, PKG_MALLOC, 
> F_MALLOC, FAST_LOCK-ADAPTIVE_WAIT
>
> ADAPTIVE_WAIT_LOOPS=1024, MAX_RECV_BUFFER_SIZE 262144, MAX_LISTEN 16, 
> MAX_URI_SIZE 1024, BUF_SIZE 65535
>
> poll method support: poll, epoll, sigio_rt, select.
>
> git revision: edef893c5
>
> main.c compiled on 23:26:34 Dec 14 2019 with gcc 4.8.5
>
> I have a problem with call forwarding on busy. The issue arises when I 
> get an INCOMING call from the gateway and the extension(callee) 
> responds with busy and callee is configured as an external number as 
> forwarding on busy so the forwarded call sends to the same gateway and 
> receives the 183. So in that case the gateway has two provisional 
> responses one is 180 from callee and 183 from the gateway. It is 
> obvious that both the responses have different to tag. So the second 
> response is not accepted by the gateway. Any solution for the issue. 
> Below is the call flow.
> Regards,
> Kamlesh
>
> Disclaimer :
>
> This e-mail and any file transmitted with it are for exclusive use of 
> the intended recipient(s)
> and may contain confidential and privileged information. If you are 
> not the intended recipient,
> please contact the sender by replying this e-mail and destroy all 
> copies and original message.
> Any unauthorized review,use, disclosure, dissemination, forwarding, 
> printing and copying of this
> email or any action taken in reliance of this e-mail is strictly 
> prohibited and may be unlawful.
>
>
> _______________________________________________
> Users mailing list
> Users at lists.opensips.org
> http://lists.opensips.org/cgi-bin/mailman/listinfo/users

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.opensips.org/pipermail/users/attachments/20200407/21ae228d/attachment.html>