[SR-Users] How to reduce re-INVITE time in Kamailio

Yuriy Gorlichenko ovoshlook at gmail.com
Tue Dec 17 19:44:50 CET 2019

Hi. It is no a kamailio question but sip question itself. You can manage
how often te invite will be by using session-timers. It will help you to
setup time range between reInvite ir whatever message you will use as

On Tue, 17 Dec 2019, 19:34 Anuran Barman, <anuranbarman at gmail.com> wrote:

> Hi, I am using Kamailio for my SIP Phone app. My main SIP client is the
> iOS app. Till now everything is working fine regarding the calling. But the
> problem is when the app is killed I am not able to pick up incoming call.
> The thing is, when app is killed I am sending PushKit VOIP message to my
> ios app to wake it up. App is waking up. But by the time app is waking up,
> the original INVITE message got missed up. So according to SIP protocol it
> will re-INVITE after some time. Currently if I keep my app open for 10-15
> secs after it wakes up, I am able to get the re-INVITE and everything works
> fine just as it was supposed to. But waiting 10-15 sec on the app is not
> practical in any sense.
> So my question is there any way I can reduce the re-INVITE time to like
> 5/6 seconds so that as soon as the app open it will wait for 5/6 seconds
> (practical upto some extent) and it will get the call ? Or what kamailio is
> using as the interval time is a SIP standard and can not be changed? If
> possible to do so, how can I do that? Please help.
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