When a UA registers, the registration has an expiration time. If the UA fails to refresh the registration before the expiration time, the server forgets the registration - concluding the UA is no longer present or alive.
Paul
Jade Chen Yan wrote:
Hi, List, Since a UA registers to a server, the server should know if the UA is alive or not. So every other time, the UA should inform the server that I am alive. If the server don't get the inform within the time , the sever should query the UA if u r online.I want to know if any SIP request can fulfill this requirement? Best Regards, Jade _______________________________________________ Sip-implementors mailing list [EMAIL PROTECTED] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
_______________________________________________ Sip-implementors mailing list [EMAIL PROTECTED] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
