Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!purdue!haven!decuac!netsys!vector!telecom-gateway From: asuvax!gtephx!who!ellisond@ncar.ucar.edu (Dell Ellison) Newsgroups: comp.dcom.telecom Subject: Re: Call Forwarding Fun Message-ID: Date: 18 Aug 89 00:14:54 GMT Sender: news@vector.Dallas.TX.US Organization: gte Lines: 18 Approved: telecom-request@vector.dallas.tx.us In article , sje!tom@pdx.mentor.com (Tom Ace) writes: -> .... Three subscribers with call forwarding would create -> a forwarding loop, e.g. A forwards his calls to B, B to C, and C back -> to A; once that was set up, calling any of the three numbers from -> another location would, after a short pause, cause the entire switch -> to go down (completely go out of service). There was evidently code -> in the switch to recognize two-subscriber forwarding loops, but with -> three or more, it would hang. The only fix they had at the time was -> to disable call forwarding for customers served by that switch. -> [Moderator's Note: We covered this topic rather extensively some time back -> in the Digest. There are now absolute limits on the number of loops which -> can be made. Maybe someone will respond who knows the specifics. PT] With a GTE switch, the 'absolute limit' is now seven. After the call has been forwarded (or diverted) seven times (even if it's in a loop), the originating party will get Reorder tone (fast busy).