[Freeswitch-users] RE-Invite in conference

kaiduan xie kaiduanx at yahoo.ca
Tue Jul 20 13:13:38 UTC 2021

I think the reINVITE is sent by session timer. 
Per rfc4028 https://datatracker.ietf.org/doc/html/rfc4028#section-10

|  | 

Session Timers in the Session Initiation Protocol (SIP) (RFC )



It is RECOMMENDED that this refresh be sent once half the session interval has elapsed.
900 seconds = 1/2 * 1800

    On Tuesday, July 20, 2021, 08:52:31 a.m. EDT, Giovanni Maruzzelli <gmaruzz at gmail.com> wrote:  
 Hello FreeSWITCHers!
I've found that in a conference (mod_conference) a re-invite is sent by FS at around 900 sec after call confirmed (ACK).
This has nothing to do with session-timeout (eg, session-expires) that are both set to 1800, and sent by FS and clients accordingly.
I can see this behavior only in conference (but maybe is elsewhere?).
I've looked into both mod_sofia and mod_conference sources, but I've not found anything related.
I've tried to debug the call with all kind of debugging/tracing (sofia lib, mod sofia, internals, etc etc) but I've not found any hint of what can trigger that reinvite.
Is it configurable?
Have a nice continuation,
keep on with the superb work,


Giovanni Maruzzelli
cell: +39 347 266 56 18


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