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
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