@comspec.uucp (David Berman) (04/06/91)
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. 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? Or: Does anyone know where such information is published for reference? 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? (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] Dave Berman 436 Perth Av #U-907 daveb@comspec.UUCP Computer at work Toronto Ontario uunet!mnetor!becker!comspec!daveb Canada M6P 3Y7 416-785-3668 Fax at work
Al L Varney <varney@ihlpf.att.com> (04/08/91)
In article <telecom11.269.8@eecs.nwu.edu> @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
elliott@uunet.uu.net> (04/11/91)
In article <telecom11.269.8@eecs.nwu.edu>, @comspec.uucp (David Berman) writes: > And I also believe that the Caller*ID transmissions from the phone > company are kind of standardized. I think. > 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? > Or: Does anyone know where such information is published for > reference? I have in front of me two Bellcore specs that I *think* are appropriate. They are: CLASSsm Feature: Calling Number Delivery Technical Reference TR-TSY-000031 Issue 3, January 1990 (This describes the encoding, bit rate, etc.) and SPCS Customer Premises Equipment Data Interface Technical Reference TR-TSY-000030 Issue 1, November 1988 (This provides some protocol information.) What I don't know is if this is really CALLER ID, or some other variant scheme. The protocol description is a bit too vague for me to be able to figure out how one would encode or decode an actual phone number. Anyone have any additional or better information? I would like to know, also. To contact Bellcore: Information Exchange Management Bellcore 445 South Street, Room 2J-125 P.O. Box 1910 Morristown, NJ 07692-1910 (201) 829-4785 Paul Elliott - DSC Optilink - {uunet,pyramid,pixar,tekbspa}!optilink!elliott
kevinc@uunet.uu.net> (04/13/91)
On 6 Apr 91 08:22:08 EDT, David Berman (daveb@comspec.UUCP) writes: [asking about how/when CallerID info is sent to the called party] > 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? As far as the future is concerned, once the local telcos get around to offering ISDN Basic Rate Interface (two data channels, one signalling channel), the calling party number will be sent from telco to the called number in the call origination message (called the SETUP message). Your (BRI-compatible) phone will have the information *before* it rings, and could easily decide whether to tell telco to proceed with the call or reject it at that time. So, if your mother calls too often, just have your phone set to reject call attempts from her number after 10 pm :-). Kevin Collins | Aspect Telecommunications USENET: ...uunet!aspect!kevinc | San Jose, CA Voice: +1 408 441 2489 | My opinions are mine alone.
Tony Harminc <TONY@mcgill1.bitnet> (04/30/91)
David Berman wrote: > 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? > Or: Does anyone know where such information is published for > reference? This is rather old, but the only answer Dave received was flip, and not very helpful. So here again is the official place to get Bell Canada's version of Call Display technical disclosure information: Bell Canada Director - Switched Network Services 220 Laurier Avenue West Ottawa, Ontario K1G 3J4 +1 613 781-3655 The document is "Call Management Service (CMS) Terminal-to-Network Interface", Interface Disclosure ID - 0001, November 1989. (The document number may give you a clue as to how long this service has been running :-)) I was not charged for this document, but Bell does reserve the right to charge for it in future. It is only 18 pages so it seems unlikely they would charge a lot. They are required to disclose this information to anyone, so any charge would be administrative only - i.e. they cannot sell the information. Phone and find out. Please note that it is incorrect to call this "the Canadian Caller*ID standard". This document describes only what is being implemented by Bell Canada in its service areas. Other Canadian telephone companies may well implement something quite different, though it isn't too likely. Tony Harminc
"Michael H. Riddle" <riddle@hoss.unl.edu> (05/01/91)
In <telecom11.320.1@eecs.nwu.edu> TONY@mcgill1.bitnet (Tony Harminc) writes: > Bell Canada Director - Switched Network Services > 220 Laurier Avenue West Ottawa, Ontario K1G 3J4 > +1 613 781-3655 > The document is "Call Management Service (CMS) Terminal-to-Network > Interface", Interface Disclosure ID - 0001, November 1989. For US specs, a file in the archives (lcs.mit.edu, cd telecom-archives) has the ordering information: caller-id-specs.bellcore. I don't know if this has any applicability to Canada or not. <<<< insert standard disclaimer here >>>> riddle@hoss.unl.edu | University of Nebraska ivgate!inns!postmaster@uunet.uu.net | College of Law mike.riddle@f27.n285.z1.fidonet.org | Lincoln, Nebraska, USA