Path: utzoo!telecom-request Date: Mon, 8 Apr 91 09:06:45 CDT From: Al L Varney Newsgroups: comp.dcom.telecom Subject: Re: Caller*ID Specifications Needed Message-ID: Organization: AT&T Network Systems 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 280, Message 1 of 8 Lines: 97 In article @comspec.uucp (David Berman) writes: > Northern Telecom has had their Maestro phones out a while, I think. > And I also believe that the Caller*ID transmissions from the phone > company are kind of standardized. I think. Depends on who/what you mean by the "phone company". Bellcore client companies have a standard. Canada may have another. Independents could have a third. PBX vendors can do all kinds of "secret" transmissions, etc. > Question: Does anyone reading know what is sent out? How the phone > number or alpha information is encoded on the ring cycle? Has it been > done in a reasonable way so that decoding is sensible? (etc) Addresses > the future? Yes. Yes. Yes, it's expansible. It's in there. > Or: Does anyone know where such information is published for > reference? OK ... One more time, with feeling: The information is published FOR PROFIT by Bellcore, and is periodically updated by them. The interface specification for the actual Customer Premises interface for analog telephone lines is in: TR-TSY-000030, "SPCS Customer Premises Equipment Data Interface", Issue 1, November 1988 + Bulletin 1, April 1989 {may be at Issue 2 by now.} This is the electrical interface, at about the level of describing how to build a 1200-baud modem with FSK signaling. The actual messages sent to the interface are in ASCII, detailed in each speification that describes a particular feature using the interface. Refer to: TR-TSY-000031, "CLASS(sm) Feature: Calling Number Delivery", Issue 2, June 1988, + Revision 1, January 1990 TA-NWT-001188, "CLASS(sm) Calling Name Delivery and Related Features", Issue 1, March 1991 {Waiting for Industry Comments} These are two relevant documents, but there are no real limits imposed by TR-30 on the usage of the interface. Use of the interface during Call Waiting is under study. The requirements for ISDN interfaces are documented in other TR's (many). Bellcore documents can be ordered by calling (201) 699-5800, (Mon.-Fri. 8 am to 6 pm) Visa, Mastercard, American Express FAX orders: (201) 699-0936 Telex orders: (201) 275-2090 Mail (with payment in U.S. funds, or credit card information): Bellcore Customer Service 60 New England Avenue Piscataway, NJ 08854-4196 All this and more is available as SR-TSY-000264, "Catalog of Technical Information" and updates/etc are detailed in the monthly periodical, "Bellcore's Digest of Technical Information." Prices (in an old catalog): TR-TSY-000030, $25 (includes Bulletin) TR-TSY-000031, $23 Revision 1 $12 (may be included in new orders?) SR-TSY-000264, No Price stated! Bellcore Digest $60/year, includes the SR-TSY-000264 yearly catalog! (Prices do not include sales tax, Canadian/Mexican or Foreign surcharges, multi-year discounts, etc.) > Further: Will Toronto (416)'s Caller ID transmissions be compatible > with the ones in the United States, say, in AT&T territory? Or will > they be similar, but different, so that Maestro phones in Atlanta, GA, > won't work in Toronto, even though they have fixed the design flaw down > there? Who knows? Depends on Canadian requirements. > (I have even more questions, but hope that I will be able to follow > the thread as others ask in response to your answers ...) [thanks] Well, ask away, but don't expect to be able to construct an interface of understand the messages from the Net, any more than you could construct a real telephone from information only from the Net. Al Varney, AT&T Network Systems