[OpenSIPS-Users] [nat_traversal] Replacement of bflag (NAT_CALLED) ?

Dan Pascu dan at ag-projects.com
Wed Nov 12 13:30:14 CET 2008

On Wednesday 12 November 2008, Klaus Darilion wrote:
> Iñaki Baz Castillo schrieb:
> > 2008/11/12 Klaus Darilion <klaus.mailinglists at pernau.at>:
> >> I still do not understand. The callee has to be registered -
> >> otherwise it is not reachable at all. Thus, keep-alive for the
> >> callee will be done once it registers based on nat tests during
> >> REGISTER. Thus, when calling the callee, the session is implicitly
> >> keep-alive'd by the the keep-alive  triggered by registration. What
> >> do I miss?
> >
> > In case the callee ends its registration during the call,
> > nat_traversal *still* sends NOTITY/OPTIONS to the callee until the
> > call ends, even if the callee is not registered anymore.
> Ok. I see. And if the callee is still registered? Will it be
> keep-alived twice?

No. It's one keepalive message per endpoint (IP:port), no matter how many 
SIP accounts that device uses with a given proxy, or for how many 
conditions the endpoint is kept alive (REGISTER/SUBSCRIBE/INVITE)

Dan (who keeps repeating here the things he already wrote in the README)

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