Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!accuvax.nwu.edu!nucsrl!telecom-request From: "Edwin R. Carp" Newsgroups: comp.dcom.telecom Subject: Re: Multiple Call-Forwarding Error Message-ID: <2488@accuvax.nwu.edu> Date: 30 Dec 89 02:44:08 GMT Sender: news@accuvax.nwu.edu Reply-To: khijol!erc@cs.utexas.edu Organization: Deadly Force, Inc., aka Clint Eastwood School of Diplomacy Lines: 41 Approved: Telecom@eecs.nwu.edu X-Submissions-To: telecom@eecs.nwu.edu X-Administrivia-To: telecom-request@eecs.nwu.edu X-Telecom-Digest: Volume 9, Issue 601, message 5 of 7 In article <2462@accuvax.nwu.edu> Miguel_Cruz@um.cc.umich.edu writes: >X-Telecom-Digest: Volume 9, Issue 599, message 7 of 9 >and hear endless clicks as the call gets bounced back and forth, eating >up more and more trunks (or whatever they use for interoffice calls I read the moderator's note. Can A forward to B, who then forwards to C, who then forwards to A? This can be repeated ad nauseum -- is the phone company smart enough to pick up on this? Ed Carp N7EKG/5 (28.3-28.5) ...!attctc!puzzle!khijol!erc (home) (512) 832-5884 Snail Mail: 2000 Cedar Bend Dr., #335, Austin, TX 78758 [Disclaimer: The information contained in this message is soley for informational purposes only. Use at your own risk. No warranty expressed or implied.] Score: Noriega: 1 USA: 0 "Good tea. Nice house." -- Worf [Moderator's Note: Good point. Honestly, I don't know in all cases. We seem to have two versions running in Chicago: One says stop the forwarding when the point where *the person presently requesting it* has been reached. In other words, no chain-forwarding. A forwards to B; B to C; and C to A. Calls to A ring through to B regardless of B's setting; calls to B ring through to C regardless of C's setting; and calls to C ring through to A regardless of A's setting. Somehow the call takes information with it saying in effect, "I am not really a call to B, I am a call to A only reaching B by virtue of forwarding, and how do we know A wants to really wind up with C ?".... The other generic operating here will chain-forward some absolute maximum number of times: this can be straight forward, A to B to C to D, or it can be in a circle, A to B to A to B to A, and at some point when it sees it is getting nowhere and is unable to ditch the call someplace then it quits and returns re-order to the original caller. PT]