Re: [reSIProcate] Why the new resSIP stack keeps sending 180 message every one minute?

["Dale R. Worley" <dworley@xxxxxxxxxxx>]

On Wed, 2006-03-29 at 12:28 -0500, Wenwei Xu wrote:
> For the old reSIP stack, once a UA receives an invite message it will only
> send a 180(ring) message once. But for the new reSIP stack, it will send 180
> message every one minute. What is the reason or benefit for this? Is there a
> way to disable that?

RFC 3261, section 13.3.1.1 says:

   To prevent cancellation, the UAS MUST send a non-100
   provisional response at every minute, to handle the possibility of
   lost provisional responses.

Dale