TELECOM Digest Tue, 10 Jan 95 02:23:00 CST Volume 15 : Issue 18 Inside This Issue: Editor: Patrick A. Townson GSM Cellular Operators List (Robert Lindh) Looking For a CE3 Interface (34 MB/s Euro Std) (Gianni Paglia) Used Phone Systems and Parts - Want to Buy (David M. Russell) 800 Numbers and Caller ID? (Glenn Foote) Standard Voice Recording/Sheila Andersen? (dan@decode.com) Source Code For Audio-Voice Modem Programming? (dan@decode.com) First NNX Area Code Officially in Service is 630? (Carl Moore) Looking for C7 Information (seen@ripco.com) Some Questions About the LDDS Calling Card (Yeechang Lee) Cellular Phone Technology (Stan Brown) Correction: Communications FTP Server in Australia (Iaen Cordell) Congresspersons Interested in Telemarketing Policy? (Anthony E. Siegman) Wanted: Info on Fax/Modem Hookup For Motorola Lazer Cell Phone (M Chapman) Video Servers (Alwin Mulder) Is TeleScript Already Available? (Paul Boots) Looking For Areacode Program (Al Cohan) 911 Providers: Watch For 912 Calls (Scot E. Wilcoxon) Re: Noise Introduced by Bit-Robbing? (Rick Duggan) Re: Finland Data Transmission (Kimmo Ketolainen) Re: MANs in USA (Chuck Poole) Multiple ESN's per NAM (Chris J. Cartwright) TELECOM Digest is an electronic journal devoted mostly but not exclusively to telecommunications topics. It is circulated anywhere there is email, in addition to various telecom forums on a variety of public service systems and networks including Compuserve and America On Line. It is also gatewayed to Usenet where it appears as the moderated newsgroup 'comp.dcom.telecom'. Subscriptions are available to qualified organizations and individual readers. Write and tell us how you qualify: * telecom-request@eecs.nwu.edu * The Digest is edited, published and compilation-copyrighted by Patrick Townson of Skokie, Illinois USA. You can reach us by postal mail, fax or phone at: 9457-D Niles Center Road Skokie, IL USA 60076 Phone: 708-329-0571 Fax: 708-329-0572 ** Article submission address only: telecom@eecs.nwu.edu ** Our archives are located at lcs.mit.edu and are available by using anonymous ftp. The archives can also be accessed using our email information service. For a copy of a helpful file explaining how to use the information service, just ask. ********************************************************************** *** * TELECOM Digest is partially funded by a grant from the * * International Telecommunication Union (ITU) in Geneva, Switzerland * * under the aegis of its Telecom Information Exchange Services (TIES) * * project. Views expressed herein should not be construed as represent-* * ing views of the ITU. * ********************************************************************** *** Additionally, the Digest is funded by gifts from generous readers such as yourself who provide funding in amounts deemed appropriate. Your help is important and appreciated. A suggested donation of twenty dollars per year per reader is considered appropriate. See our address above. All opinions expressed herein are deemed to be those of the author. Any organizations listed are for identification purposes only and messages should not be considered any official expression by the organization. ---------------------------------------------------------------------- From: etxlndh@eos99.ericsson.se (Robert Lindh) Subject: GSM Cellular Operators List Organization: Ericsson Telecom AB Date: Mon, 9 Jan 1995 15:11:07 GMT Australia Optus Vodafon Belgium Belgacom Denmark Tele Danmark Sonofon Estonia EMT Finland Telecom Radiolinja France Telecom SFR Germany D1, DeTeMobil D2, Mannesmann G Britain Cellnet Vodafon Greece Panafon STET Holland Telekom Hong Kong Smartone Hungary Pannon Westel Iceland Telekom Ireland Telecom Italy SIP Luxemburg Telekom Norway Tele-Mobil Netcom Portugal TMN Telecel South Africa MTN Vodacom Sweden Comviq Europolitan Telia Switzerland Telekom Turkey Turkcell Telsim ------------------------------ From: paglia@mln.mts (gianni.paglia) Subject: Looking For a CE3 Interface (34 MB/s Euro Std) Date: 9 Jan 1995 13:59:17 GMT Organization: Digital Equipment Corporation Reply-To: paglia@mln.mts (gianni.paglia) Hello, I'm looking for a Channelized E3 interface (34 Mb/s European standard) for PCI, ISA or VME bus. The interface board I need should have a 34 Mb/s E3 output, with multiplexed E1 channels (@ 2.0Mb/s) individually accessible from the board driver. I would like to know if an interface of this sort is commercially available. Thanks a lot for your info. Gianni Paglia Digital Equipment SPA - Milano (Italy) E-mail: gianni.paglia@mln.mts.dec.com ------------------------------ From: itelecom@bilbo.pic.net (David M. Russell) Subject: Used Phone Systems and Parts - Want to Buy Date: 9 Jan 1995 17:42:47 GMT Organization: Integrity Telecommunications I buy used phone systems and parts. Please fax inventory to 214-357-7485. My voice number is 214-357-7484 if you need assistance. ------------------------------ From: glnfoote@freenet.columbus.oh.us (Glenn Foote) Subject: 800 Numbers and Caller ID Date: 9 Jan 1995 13:44:24 -0500 Organization: The Greater Columbus Freenet Can someone explain IF, not why, full telephone numbers of people calling 800 numbers are shown (either on the bill, or as part of the call) to those who OWN the 800 numbers? Many thanks, Glenn L Foote ...... glnfoote@freenet.columbus.oh.us [TELECOM Digest Editor's Note: The answer is yes. People who have 800 numbers receive the ANI -- not the Caller-ID, although the resulting data output is almost always the same -- of the calling party, regardless of whether or not the calling party blocks their ID. Either they get it in real time (that is, as the call is in progress) or on a delayed basis with their monthly billing. The reason for this is the company or person paying for the call has a right to know what they are being required to pay for. Do not have privacy expectations when dialing an 800 number. PAT] ------------------------------ Subject: Standard Voice Recording/Sheila Andersen? From: System Operator Date: Mon, 09 Jan 95 12:49:20 EST Organization: Decode Systems Stephen Tihor writes: > I am trying to find in the archives the reference to the woman who did > various of the standard voice recordings. I recall reading the > article some time back but am having little luck finding it in the > archives. Can anyone supply a pointer. The name "Shiela Andersen" > probably misspelled was suggest to me by someone but I want ot check > the archives for the Straight Dope. :) The January/February 1995 issue of _Health_ magazine has an article beginning on page 38 entitled "What Your Voice Says About You." In it, the author describes meeting Joan Kenley, the telephone lady, who "is the digitized operator of directory assistance in most cities and towns from Spokane to Savannah." She is also the voice that instructs "The number you have dialed is not in service. Please check the number and try again." She is 53 years old and lives near Oakland, California. system@decode.com (System Operator) Cryptography, Security, Privacy BBS +1 410 730 6734 Data/FAX ------------------------------ Subject: Source Code For Audio-Voice Modem Programming? From: System Operator Date: Mon, 09 Jan 95 13:02:27 EST Organization: Decode Systems Hello, I'm looking for any sample or public domain source code used to control an audio-voice (AT+FCLASS 8) modem used in any kind of interactive application. Any pointers to FTP sites, etc, would be appreciated. Dan dan@decode.com system@decode.com (System Operator) Cryptography, Security, Privacy BBS +1 410 730 6734 Data/FAX ------------------------------ Date: Mon, 9 Jan 95 15:53:47 EST From: Carl Moore Subject: First NNX Area Code Officially in Service is 630? Mail to the digest indicates that area 630 (an overlay on 312 and 708, at least for now) is the first NNX area code to go into service. 334 in Alabama and 360 in Washington state are to kick in Jan. 15. [TELECOM Digest Editor's Note: Yes, but as noted yesterday in the Digest, don't expect a lot of activity in that code for a few months. It was to be an overlay only for wireless users, but now the wireless carriers are fighting with Ameritech to get 630 distributed equally over the entire 312/708 region, with wireline users included. Ameritech says 630 will 'eventually include some wireline users' in the next year or so. No one knows for certain yet just what all will be included. PAT] ------------------------------ From: seen@ripco.com (seen) Subject: Looking For C7 Information Organization: Ripco BBS, Free Trial account (312) 665-0065 Date: Mon, 9 Jan 1995 21:15:52 GMT I am looking for any information on CCITT #7. If you have any tutorials or texts, please let me know! seen@ripco.com ------------------------------ From: ycl6@sawasdee.cc.columbia.edu (Yeechang Lee) Subject: Some Questions About the LDDS Calling Card Date: 9 Jan 1995 23:27:04 GMT Organization: Trilateral Commission, Columbia University student chapter Reply-To: Yeechang Lee Well, I got the fabled LDDS calling card in the mail. You know, the one its salesmen annoy people in every newsgroup with ads about? It _is_ supposed to have much better rates than my AT&T or Sprint cards, and I guess I'll find out as soon as I need to use it. Anyway, a few questions: a) All I got in my envelope was the card (in a paper carrier). No brochure w/rates or anything. I sorta know the rates but would have liked a paper reference. Was there something missing? b) My card has the logo of "American Travel Network" on the upper-right-hand side. I also hear "Metromedia" associated with the LDDS name, but it doesn't appear on the card. Who's ATN, are there different versions of the card, and if so are there different rates? Anyway, thanks! Yeechang Lee (ycl6@columbia.edu)|Nevada Las Vegas Mission Jul'92-'94 Columbia University/New York City|Celestial Kingdom through Taco Bell ------------------------------ From: stanb@netcom.com (Stan Brown) Subject: Cellular Phone Technology Organization: NETCOM On-line Communication Services (408 261-4700 guest) Date: Mon, 9 Jan 1995 17:02:01 GMT Having recently acquired a cellular phone, I suddenly find myself curious about how the systems operate. Could someone point me to a good reference on the operation of cellular systems? I am particularly interested in the technical side (not economics) of roaming, and follow me. Thanks, Stan Brown stanb@netcom.com 404-996-6955 Factory Automation Systems Atlanta Ga. ------------------------------ From: iaenc@sydney.DIALix.oz.au (Iaen Cordell) Subject: Correction: Communications FTP Server in Australia Date: 10 Jan 1995 13:18:36 +1100 Organization: DIALix Services, Sydney, Australia. Please note: The FTP address in Australia is: happy.dotc.gov.au -- not happy.doc.gov.au. ^^^^ ^^^ iaen cordell [bad typing can create lots of e-mail] ------------------------------ Date: Mon, 9 Jan 95 20:08:12 PST From: Anthony E. Siegman Subject: Congresspersons Interested in Telemarketing Policy? Are there any members of the current Congress who are particularly concerned about telemarketing policy (in particular policies or legislation for controlling its use)? If you email responses to siegman@ee.stanford.edu I'll summarize. Thanks much. ------------------------------ From: Mike Chapman Subject: Wanted: Info on Fax/Modem Hookup For Motorola Lazer Cell Phone Organization: University of Virginia Date: Mon, 9 Jan 1995 16:59:49 GMT I got a Motorola Lazer pocket cell phone hoping to use it with my notebook, but when I asked how much the device to do this costs, I was very shocked to find that it was almost $300!! Is this price ridiculous? Is there a cheaper place to get the Motorola device? Are there any other options? Thanks! mike@chimera.med.virginia.edu mike%doxy@virginia.edu ------------------------------ From: alwin@ec.ele.tue.nl (Alwin Mulder) Subject: Video Servers Date: Mon, 9 Jan 1995 09:47:30 GMT Organization: Eindhoven University of Technology Hello, I am a graduation student at the University of Technology at Eindhoven, and I am working on a VOD project. I was wondering if anybody could tell me where I could find some information on video-server-systems. Are there any specific newsgroups and/or WWW-pages? Thanks in advance, Alwin Mulder úÿ ------------------------------ Date: Mon, 9 Jan 1995 12:42:22 +0100 From: paul@gig.nl (Paul Boots) Subject: Is TeleScript Already Available? Hi all, Would there be anybody who can tell me if TeleScript is allready available. I heard and read a lot about it and I would love to get hands-on experience. So far all my inquiries at several companies produced no answer. Thanks, Paul Boots (paul@gig.nl) ------------------------------ From: ac554@lafn.org (Al Cohan) Subject: Looking for Areacode Program Reply-To: ac554@lafn.org (Al Cohan) Date: Tue, 10 Jan 1995 00:15:01 GMT I used to have an areacode/zipcode/V&H/Lat.& Lon. lookup program. Now, I can neither find it or remember where I got it. It was a massive 700K+ program in .zip format. If anyone can be of assistance, I would surely appreciate it. Thank you, Al ------------------------------ From: sewilco@fieldday.mn.org (Scot E. Wilcoxon) Subject: 911 Providers: Watch For 912 Calls Date: 9 Jan 1995 22:14:43 -0600 Organization: FieldDay The FOX TV show "The Simpsons" tonight had a joke where the punch line was that for better service, call the secret emergency number 912. As has been reported before, some older switches will connect to 911 when "91x" is dialed. Those readers who are involved in operating 911 centers might like to know this explanation if you notice a spike in hangup and other no-service calls. Scot E. Wilcoxon sewilco@fieldday.mn.org +1 612 936 0118 ------------------------------ From: duggan@cc.gatech.edu (Rick Duggan) Subject: Re: Noise Introduced by Bit-Robbing? Date: 9 Jan 1995 18:25:07 -0500 Organization: College of Computing In article , sohl,william h wrote: > In article , Matthew P. Downs > wrote: >> Unless you use ISDN, you are using robbed-bit signalling between your >> premise and the Central Office. Unless like a previous poster had >> stated, the robbed bits only become important during call set-up and >> tear-down. Ie. going on-hook and off-hook. Otherwise the robbed bits >> will be 1's. In a sense, the robbed bits are only important during call set-up and tear-down. However, since (a) we don't know when set-up/tear-down occurs and (b) we don't have control over where our PCM data goes, we can't use those bits at all. Which gets back to why it's called robbed-bit signaling in the first place. Their presence still affects the bandwidth that can be obtained. > If we are only talking about analog modems then the premise to Central > Office is probably not a DS0 channel, but rather a two wire circuit ... > and if the premise to the central office is an analog two wire circuit, > then there is NO bit-robbing from the premise to the Central Office. I disagree. Even assuming analog modems, the presence of a digital loop carrier in the path between the subscriber and the CO will likely mandate the use of robbed bit signaling. TR57 and TR08 both specify robbed bit signaling formats, and I'm pretty sure both types of interfaces are still in use today. I think even TR303 uses RBS for call progression. > It is, therefore, quite possible with today's trunking network to have > an end-to-end analog phone call (both ends are two wire, conventional > POTS lines) and the entire interoffice trunking for the call consisting > of 64 clear trunking (i.e. no robbed-bit signaling trunking at all). > As the network continues to evolve, that will be more and more the > likely connection until, at some future time, all robbed-bit trunking > is gone. I don't think we're necessarily talking about RBS on the trunking, but on the subscriber line from the CO to the remote digital terminal. I think, in fact, that an RDT is a lot more likely these days than a pure analog connection from premises to CO. I do agree with you that we are on the way to 64 clear all the way around. Rick Duggan - duggan@cc.gatech.edu -or- rduggan@bnr.ca Member of Scientific Staff at BNR OPC Software Development ------------------------------ From: Kimmo.Ketolainen@utu.fi (Kimmo Ketolainen) Subject: Re: Finland Data Transmission Organization: Turun yliopisto - University of Turku, Turku, Finland Date: Mon, 9 Jan 1995 23:32:58 GMT jackp@telecomm.admin.ogi.edu (Jack Pestaner) wrote: > We have been communicating to a site in Finland with autoranging 14.4k > modems. On a good day we can run at 9600, but typically at 2400. I'd suggest using the Internet for doing file transfer. Internet connections are available in most cities in Finland by Telecom Finland and the co-operating local companies of Telegroup of Finland. Kimmo Ketolainen University of Turku home +358 21 237 8227 Kimmo.Ketolainen@utu.fi shoe +358 40 500 2957 FIN-20540 Turku work +358 21 262 1496 ------------------------------ From: inrworks@gate.net (Chuck Poole) Subject: Re: MANs in USA Date: Mon, 9 Jan 1995 09:33:23 Organization: Voiceware Systems, Inc. > I need some help in getting info about Metropolitan Area Networks > in USA. The questions are: > 1. What is the physical structure of MANs (fiber, coax)? They are always constructed of fiber. > 2. If fiber what is the protocol (fddi, atm)? Both of these protocols are used, many times on the same network. These are both emerging standards (in the scheme of things). [From Newton's Telecom Dictionary (ISBN 0-936648-47-3) 216-691-8215 ] "FDDI is a 100 Mbps fiber optic LAN. It is an ANSI standard. It uses counter rotating token ring topology." This is a topology that is primarily used to connect servers together (data only). "... FDDI-II allows portions of the 100Mbps bandwith to carry low delay, constant bit rate, isochronous data like 64Kbps telephone channels." This would allow for voice/video applications. "ATM. Very high speed telecom transmission technology. ATM is a high bandwidth, low delay, packet-like switching and multiplexing technique." .. "The CCITT has selected ATM as the future broadband network..." I could not find specs on the actual speed, but it would not appear to matter as ATM divides its' data into 53 bye "cells" and throws them onto the pipe (whatever the speed it may be). Ofcourse, you could run into a problem trying to run too much video/voice/data if your pipe is not big enough. > 3. Who is the main investor (banks)? Governments, Commercial fiber owners (like MFS, AT&T, SPRINT), Joint Ventures, etc. Banks would usually just be a large customer. > 4. Does banks use MAN for data transmission? Banks use different means to transmit different data. There are established packet switched data networks for wire transfers. Usually point to point data circuits are used between branches. > 5. What services are provided, and which are most popular? In addition to all voice/data services, the sky's the limit! Video, Interactive services, and many more. Hope this helps, Chuck Poole Voiceware Systems, Inc. 407-655-1770 X14 ------------------------------ From: dsc3cjc@imc220.med.navy.mil (Chris J. Cartwright - ELF) Subject: Multiple ESN's per NAM Organization: National Naval Medical Center Date: Mon, 9 Jan 1995 14:01:57 GMT On my way home last night I called Cell One from my carphone about a minor service problem that I wanted to clear up. While on hold for ten minutes ( :(, at least the air time was free) I was pitched an ad for FlexPhone. It sounded like they were talking about multiple ESN's per NAM and since I also have a hand held it was a good match for what I wanted the phones to do since I got them two years ago. Wasting no time I stopped at the Cell One office before I got home. The ad was true! Cell One in Maryland is now offering up to three ESN's per NAM. The details are: CellularONE (SID 00013/0000D, 301-742-XXXX) - Two ESN's on one NAM $17.95/mo + reg. service price; - Three ESN's on one NAM 29.95/mo + reg. service price; - Activation within a minimum of 48 hours (yet to be seen); - Only the "primary" ESN can roam (??); - All calls are billed to a single number and no determination is made as to which phone placed the call. The above comes from the one page sheet I filled out at the office. It contains very little information over what you supply, ESN, MIN, Name, etc. and none of the *legal speak* I would expect on the back. What I found out by talking to the rep is that I was the first in their office to sign up and that if both phones are on at the same time whichever one rings is the one that gets the call (no kidding!). I find this more than interesting since last week I talked with BAM about switching both of these phones and getting a single number for both. The tech was very good about telling me what I *could* ;) do to accomplish this but the BAM party line is that two ESN's per NAM is forbidden in the Atlantic corridor (DC to Boston) because of the concerns about fraud. My FlexPhone service won't be enabled until Monday so I'll have to wait and see how it works before I give any kind of report. I do a fair amount of interstate traveling so I should have an answer on the roam for secondary ESN's in short order. Reading through back issues I've seen this mentioned from time to time as a technical discussion but this is the first time I've seen it available as a service. Chris Cartwright, Technical Engineer E-Mail dsc3cjc@imc220.med.navy.mil C-Serve 71614,2441 [TELECOM Digest Editor's Note: Having two or more phones on the same number *used to be* a technical problem for carriers. If anyone else over on the east coast tries out this new arrangement and wishes to report on it to the Digest, I'm sure others will appreciate your report. PAT] ------------------------------ End of TELECOM Digest V15 #18 *****************************