Path: utzoo!telecom-request Date: Tue, 28 May 91 13:21:34 EDT From: Tony Harminc Newsgroups: comp.dcom.telecom Subject: Re: Ringing Tones Around the World Message-ID: Organization: TELECOM Digest Sender: Telecom@eecs.nwu.edu Approved: Telecom@eecs.nwu.edu X-Submissions-To: telecom@eecs.nwu.edu X-Administrivia-To: telecom-request@eecs.nwu.edu X-Telecom-Digest: Volume 11, Issue 405, Message 5 of 7 Lines: 24 "Robert L. Oliver" writes: > Well, I can understand the slight differences in tones, etc. But > something rather odd occurred today: I dialed a number in 703, and > instead of receiving the standard U.S. single ring, I received a > non-US double ring. I realize that the equipment can produce whatever > it wants (indeed, our PBX uses double-ring to indicate outside calls, > but the outside caller still hears the US single ring). Isn't there > some sort of BellCore standard that says that the CO has to produce a > US single ring? The CO doesn't produce the ringing tone in the case of Direct In Dial to a PBX. The PBX produces all the call progress tones, unless for some reason the CO can't reach the PBX trunk (PBX is down, trunks are all busy, etc.) I often hear the double ring when calling PBXs in North America. It does seem curious that the double ring was assigned to the external rather than the internal calls, though. Tony Harminc