Path: utzoo!utgpu!utstat!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!rutgers!netsys!vector!telecom-gateway From: westmark!dave@rutgers.edu (Dave Levenson) Newsgroups: comp.dcom.telecom Subject: Re: Calling party ID Message-ID: Date: 19 Mar 89 16:02:05 GMT Sender: news@vector.UUCP Organization: Westmark, Inc., Warren, NJ, USA Lines: 65 Approved: telecom-request@vector.uucp X-Submissions-To: telecom@eecs.nwu.edu X-Administrivia-To: telecom-request@vector.uucp X-TELECOM-Digest: volume 9, issue 98, message 2 of 6 In article , jbn@glacier.stanford.edu (John B. Nagle) writes: > Questions: > 1. What happens when a call is originated from a PBX extension? Is > the number displayed just the identity of the outgoing PBX trunk? Even > assuming a PBX wants to cooperate and pass internal extension numbers > outward, is there a defined interface for this? What happens when the > outgoing trunk has is outgoing only and has no telephone number, which > is not that unusual? Yes, such an interface is defined. State-of-the-art PBX equipment compatible with CCIS is capable of sending and receiving caller-id information. These PBX's typically display caller-id information on their special display-equipped telephone sets, and transmit the calling station number on outgoing calls. > 2. What about inter-LATA calls? Which vendors pass the caller ID through, > or plan to? Will the FCC mandate that caller ID be passed across > long distance carriers? In NJ, only intra-lata calls report caller id, as of today. On many calls from out-of-state, we get a caller-id display showing some number with a Newark exchange prefix. It turns out that this is the number of the local outgoing trunk used by the inter-lata carrier who handled the call! Not helpful, but understandable. When CCIS connectivity exists between the inter-lata carriers and the local exchange carriers, perhaps we'll see universal caller-id, but I think it may be a few years before that happens. > 3. What about international calls? see my thoughts on 2 > 4. Can the receiver distinguish "caller ID suppressed" from "caller ID > not known"? The information sent to the called subscriber by the CO does distinguish between "caller ID suppressed" and "not known". Whether this difference is displayed depends upon which brand of caller-id display is used. Some do, and some always display ??? when no number is received, and ignore the reason code. > 5. Is someone working on a modem that understands caller ID signals? Colonial Data Technologies, of New Milford, CT, (800) 622 5543, currently markets a caller-id display for residential use. They tell me that they are developing a PC expansion card that receives the caller-id info and makes if available to the PC software. I have no information on the projected availability of this product, or the capabilities of the software with which it will probably be bundled. I expect that there will be a database of sorts where the user can enter the information he wants displayed on his PC screen for each calling number listed. It is probably not practical to store the entire North Jersey white pages in a PC-XT! -- Dave Levenson Westmark, Inc. The Man in the Mooney Warren, NJ USA {rutgers | att}!westmark!dave