Path: utzoo!telecom-request Date: Sun, 26 May 91 17:37 PDT From: John Higdon Newsgroups: comp.dcom.telecom Subject: Re: Ringing Tones Around the World Reply-To: John Higdon Message-ID: Organization: Green Hills and Cows 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 400, Message 6 of 9 Lines: 33 Rick Broadhead writes: > Are there any telephones on the market for a residential line that produce a > double ring *on the receiving end* ? I was referring to Robert Oliver's > comment that the PBX system phone in his office produces a double ring when > the call originates from outside the building. I was wondering if there are > phones that can be used on a residential line that will give a *double ring* > for incoming calls. I am talking about the telephone ringer. With some very limited exceptions (such as some cordless phones), all phone INSTRUMENTS ring at the rate ringing current is applied. If the CO (or PBX) sends a single ring cadence, the phone sounds with a single ring. The telephone ringer is a very stupid device in that it makes noise when powered (by ringing current) and is silent when it is not. The reason Robert Oliver's office phone rings the way it does is because it is connected to the PBX, which can power the ringer with any cadence it likes. The phones in my home ring with a single ring for outside calls, a double ring for inside calls, and a triple ring when called from the front door box. What are my phones? They are Cortelco 2500 sets. How can they behave in this manner? Because ringing current comes from my Panasonic KX-T1232 and NOT from the telephone company. If you really want your phones to ring with a cadence separate from the one supplied by your central office, then you will have to invest in some sort of phone system, be it a PBX, hybrid, or a key system. John Higdon | P. O. Box 7648 | +1 408 723 1395 john@zygot.ati.com | San Jose, CA 95150 | M o o !