Alex's suggestion works fine for me as well.

Have you tried using dialog functions, like so:

dlg_manage();
dlg_set_property("timeout-noreset"); # don't reset timeout on in-dialog messages reception
#set dialog properties. If any party disappears from the network - issue a BYE after timeout on OPTIONS
dlg_set_property("ka-src"); # send keep alive OPTION requests to caller
dlg_set_property("ka-dst"); # send keep alive OPTION requests to callee


On Wed, Aug 29, 2018 at 9:46 AM Alex Balashov <abalashov@evaristesys.com> wrote:
On Wed, Aug 29, 2018 at 01:43:52PM +0000, Hamid Hashmi wrote:

> I already tried this but it didn't work. There are no OPTIONS packet
> to caller or callee.

I use it; it works. I would troubleshoot that angle further.

--
Alex Balashov | Principal | Evariste Systems LLC

Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free)
Web: http://www.evaristesys.com/, http://www.csrpswitch.com/

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