Releasing the call does not ensure that the associated subscriptions will go away, right. Even if the INVITE originated dialog is ended with a BYE, the subscription will persist. How could we end this Subscription, when the call goes away. Would it help if the referring agent sends a SUBSCRIBE message with a Expires timer set to 0 ?.
> -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] Behalf Of > Brett Tate > Sent: Thursday, March 31, 2005 2:18 PM > To: [email protected] > Subject: RE: [Sip-implementors] Problem with REFER transfer in IMS > networks > > > > Problem: Since IMS implementations do not > > send a NOTIFY, the subscription created by > > the REFER request will hang around indefinately. > > > > Are there any known solutions to deal with > > the non-receipt of NOTIFY messsages to end > > the subscription in the UAC that sent > > the REFER. > > I think that it is considered an abnormal situation without the use of > http://www.ietf.org/internet-drafts/draft-ietf-sip-refer-with- norefersub-01. txt. Thus the "subscriber" can wait around however long it desires. If the call has been released and no NOTIFY has been received within a minute, I doubt that a NOTIFY is going to arrive. _______________________________________________ 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
