Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!rutgers!texbell!vector!telecom-gateway From: westmark!dave@uunet.uu.net (Dave Levenson) Newsgroups: comp.dcom.telecom Subject: Re: Apartment Door Answering Service & More on Picturephone [tm] Message-ID: Date: 15 Oct 89 13:11:41 GMT Sender: news@vector.Dallas.TX.US Organization: Westmark, Inc., Warren, NJ, USA Lines: 49 Approved: telecom-request@vector.dallas.tx.us X-Submissions-To: telecom@eecs.nwu.edu X-Administrivia-To: telecom-request@vector.dallas.tx.us X-TELECOM-Digest: volume 9, issue 450, message 6 of 8 In article , kitty!larry@uunet.uu. net (Larry Lippman) writes: > In article the Telecom Moderator > writes: > > Apartment building front door 'enterphone service' provided by > > Illinois Bell (a CO-based service) also uses panel phones, but with > > armored handsets instead of the old kind which retracted back into the wall ... > With the advent of divestiture and related changes in the way > BOC's operate, I suspect that ADAS may be no longer offered for new > installations, although I could be wrong. I haven't seen an ADAS > installation in a good many years. My parents have a condo in Bethesda, Maryland (a Washington, DC suburb) in which ADAS was installed during the last year. At the same time it was installed, they were offered equal access, call-waiting, and several other custom-calling features. From the sound of things, I think they had number 5 crossbar switching until the time of great changes. It now sounds more like 5ESS. (Does anybody know for sure? It's 301-229 for the curious.) This may mean that the 5ESS supports ADAS. It may also be a CPE-based version of the same service. Perhaps the armored panel phone in the foyer detects the touch tone from the resident's set and unlocks the door? I don't remember seeing any brand name on the set. When I visit, the directions on the phone tell me to dial # and their appartment number. When I lift the handset, there is no battery or sound in the receiver. When I enter the #, I hear what sounds like CO dialtone. I then enter their three-digit appartment number, and hear the three touch-tones in the receiver. As soon as I have entered three digirts, the phone dials their 7-digit number, using pulse-dialing (I hear the pulses in the handset). The microphone is dead (i.e. no side-tone) until after dialing is complete, but is enabled during ringing. When they answer, they dial 9 to admit me. I hear the first few tens of milliseconds of their tone signal, and then silence. About 500 msec later, the entry door goes "thunk-buzzzzzz" and I am given access. Does anyone recognize this system? Dave Levenson Voice: (201) 647 0900 Westmark, Inc. Internet: dave@westmark.uu.net Warren, NJ, USA UUCP: {uunet | rutgers | att}!westmark!dave [The Man in the Mooney] AT&T Mail: !westmark!dave