I don't know what kind of NAT you are using, but for some specific NAT, incoming packets couldn't refresh the binding on NAT router.
-----Original Message----- From: Ivar [mailto:[EMAIL PROTECTED] Sent: 2007年4月19日 10:50 To: Bu, Wenfei (Leo) Cc: [email protected] Subject: Re: [Sip-implementors] registrar keep-alive Yep thats one option, but register message bigger, more over head when to send just some keep-live bytes. Any comments welcome ... . Bu, Wenfei (Leo) wrote: > How about setting the registrar with a smaller registration interval? So, the > UA will send a Register before the NAT binding goes expired. > > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Ivar > Sent: 2007年4月19日 8:12 > To: [email protected] > Subject: [Sip-implementors] registrar keep-alive > > Hi, > > Is it allowed or wise for registrar server to send keep-alive packets to > registered contacts ? > > Many SIP devices don't send keep-alive and router expires NAT session. > > _______________________________________________ > Sip-implementors mailing list > [email protected] > https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors > _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
