Predictable nat keepalive OPTIONS from server

"Jon Bonilla (Manwe) via sr-users" <[email protected]> Tue, 12 May 2026 17:00:01 +0200

Newsgroups	gmane.comp.voip.ser
Message-ID	<20260512165421.21ae8cb9@multivac>

Hi

I'm experiencing an issue when trying to keep open the natted registrations of
the phones. 

It happens since upgraded from 5.6 to 6.0

The modparams in 5.6:
modparam("usrloc", "timer_interval", 30)
modparam("nathelper", "natping_interval", 0)




The modparams are these in 6.0:

modparam("usrloc", "timer_interval", 30)
modparam("usrloc", "ka_interval", 20)
modparam("usrloc", "ka_randomize", 5)
modparam("nathelper", "natping_interval", 0)

I let the ursloc ka system to send the keepalives. It does send them every 30
seconds with that configuration but the first one after the REGISTER can take
a minute and by that time some routers have closed the port and the OPTIONS
don't make it to the phone.

Is there a way to ensure that the first OPTIONS is sent before 30 seconds have
elapsed since the REGISTER?

Should I keep both ka and nathelper mechanisms?



cheers,

Jon

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