TELECOM Digest Thu, 17 Feb 94 01:45:00 CST Volume 14 : Issue 87 Inside This Issue: Editor: Patrick A. Townson CFP: Smart Card Research Advanced Application Conference (J. Vandewalle) VCR and Touch-Tones (Markus Schlegel) Directory Assistance in Switzerland (Eric De Mund) Is There a Sprint 1-800 Number? (David Langlands) Need Information About Telemate (Al Cohan) Simple Phone Set Sources Wanted (Dave Agans) DSU Comparison Matrix (Ellis Claggett) Re: Need Info on ISDN Phones (Al Varney) Re: Tropez 900Mhz Cordless Phones (Bill Bradford) Re: VTech 9 "Tropez" and Sony SPP-ER1 900 MHz Phones (Mike Yang) Re: VTech 9 "Tropez" and Sony SPP-ER1 900 MHz Phones (Steve Bryan) Re: Digital Cellular Phones (Michael D. Sullivan) Re: Digital Cellular Phones (Alex Cena) Re: Digital Cellular Phones (John Galloway) 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 GEnie. Subscriptions are available at no charge to qualified organizations and individual readers. Write and tell us how you qualify: * telecom-request@eecs.nwu.edu * The Digest is compilation-copyrighted by Patrick Townson Associates of Skokie, Illinois USA. We provide telecom consultation services and long distance resale services including calling cards and 800 numbers. To reach us: Post Office Box 1570, Chicago, IL 60690 or by phone at 708-329-0571 and fax at 708-329-0572. Email: ptownson@townson.com. ** 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 gatewayed to Usenet where it appears as the moderated newsgroup comp.dcom.telecom. It has no connection with the unmoderated Usenet newsgroup comp.dcom.telecom.tech whose mailing list "Telecom-Tech Digest" shares archives resources at lcs.mit.edu for the convenience of users. Please *DO NOT* cross post articles between the groups. 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: jeanjac@iad.ift.ulaval.ca (Jean-Jacques Vandewalle) Subject: CFP: Smart Card Research - Advanced Application Conference Reply-To: jeanjac@iad.ift.ulaval.ca Organization: Universite Laval, Dept. Informatique Date: Wed, 16 Feb 1994 22:43:53 GMT CALL FOR PAPERS : CARDIS FIRST SMART CARD RESEARCH AND ADVANCED APPLICATION CONFERENCE October 24 - 26, 1994 LILLE FRANCE Sponsored by IFIP - The International Federation for Information Processing AIMS AND GOALS Smart cards or IC cards are becoming a significant part of the information processing world. Furthermore they are beginning to move towards real integration into the information systems. They participate in the overall data management, security and communication processes. But they bring their own special characteristics. It is very likely that future IC cards will require many scientific and technical improvements which represent a challenge for the success of the technology. So far there are many events which are mostly devoted to the commercial and application aspects of IC cards. There is now an opportunity to initiate a scientific conference bringing specialists who are involved in all aspects of design of the future IC cards and related devices and environment. IFIP - the International Federation for Information Processing has agreed to sponsor this conference. It will be the first occasion for the IC card community to start a permanent activity: In addition to the conference itself there will be discussions about creating a permanent group within IFIP with possible implication for advancing standards, publishing and international cooperation. SUBMISSIONS Six copies of detailed abstracts of original papers corresponding to one or several themes for the conference should be sent in English to the program chairman before May 2, 1994. The submissions will start with a succinct statement of the problem addressed and their significance, appropriate for a non-specialist. Technical development directed to the specialist should follow as needed (at most ten pages). They should be accompanied by a fact sheet indicating the following: - Title of the paper with the relevant conference theme(s); - Author(s) with affiliation, address, phone and fax numbers, E-mail. Proceedings will be available at the conference. IMPORTANT DATES Submission deadline May 2, 1994 Acceptance notification June 17, 1994 Camera ready paper due August 13, 1994 Conference October 24 - 26, 1994 THEMES TECHNOLOGY IC architecture and techniques Memories and processor design Read/Write unit engineering Specific co-processors for cryptography Biometry Communication technologies Interfaces with the owner, the service suppliers Reliability and fault tolerance Special devices Standards SOFTWARE The operating system Models of data management Communication protocols IC CARD DESIGN IC cards formal specification and validation Tools for internal or external software production Validation and verification Methodology for application design SECURITY Models and schemes of security Algorithms Security interfaces Hardware and software implementation Security of information systems including cards Formal verification of transaction sets IC CARDS, INDIVIDUALS AND THE SOCIETY IC cards and privacy Access to his data by the owner IC cards: political and economical aspects Is the IC card going to change regulation? Patents, copyrights FUTURE OF THE IC CARDS Innovative technologies Moving towards the pocket intelligence Convergence with portable PCs, laptops etc ... PCMCIA INNOVATIVE APPLICATIONS Design methodology of applications IC cards and the information system Examples of new applications Requirements for innovative cards ORGANIZATION General Chairman Program Chairman Prof. Vincent Cordonnier Prof. Jean-Jacques Quisquater RD2P Universit'e Catholique de Louvain CHRU CALMETTE Dept. of Electrical Eng. (DICE) Rue du Prof. J. Leclerc Place du Levant, 3 F - 59037 LILLE CEDEX B - 1348 Louvain-la-Neuve FRANCE BELGIUM Tel (33) 20 44 60 47 Tel (32) 10 47 25 41 Fax (33) 20 44 60 45 Fax (32) 10 47 86 67 e-mail: cardis@rd2p.lifl.fr Quisquater@dice.ucl.ac.be Program committee Mart'in Abadi (Dec Research, USA) Ross Anderson (Cambridge, UK) Benjamin Arazi (Ben-Gurion, Israel) Todd Arnold (IBM, USA) Jacques Berleur (FNDP, Belgium) William Caelli (Queensland, Australia) David Chaum (DigiCash, Netherlands) Vincent Cordonnier (Lille, France) Mark Cummings (SRI, USA) Amos Fiat (Tel-Aviv, Israel) Andr'e Gamache (Quebec, Canada) Marc Girault (SEPT, France) Louis Guillou (CCETT, France) Joseph Hoppe (TRT Philips, France) John Kennedy (Cylink, USA) Philippe Maes (Gemplus, France) Roger Needham (Cambridge, UK) Jean-Jacques Quisquater (Louvain-la-Neuve, Belgium) Laurent Sourgen (SGS-Thomson, France) Doug Tygar (Carnegie-Mellon, USA) Michel Ugon (Bull-CP8, France) Klaus Vedder (GAO, Germany) Robert Warnar (NIST, USA) The city of LILLE is about 150 miles away from PARIS. It can be reached: from Paris by either motorway (two hours) or train (one hour). From most European countries by train, motorway or plane. The conference will take place at the University of Sciences and Technology of Lille. Accommodation can be provided either on the campus or in the center of the Lille. We will provide maps and help for hotel reservation and travels. ------------------------------ From: UPS500@IBM.rhrz.uni-bonn.de (Markus Schlegel) Subject: VCR and Touch-Tones Date: 16 Feb 1994 15:17:34 -0600 Organization: UTexas Mail-to-News Gateway I have the following problem: I would like to remote-control video equipment that is controllable by infra-red otherwise by means of touch-tone. The aim is to be able to remotely set a channel on a satellite receiver and start the VCR for recording. Timer control obviously isn't the solution, as I am looking to record "wild feeds" on short notice. Best thanks, Markus Schlegel At Universitaet Bonn, Germany ------------------------------ Date: Wed, 16 Feb 1994 13:42:48 -0800 From: Eric De Mund Subject: Directory Assistance in Switzerland Reply-To: Eric De Mund Organization: Netcom Online Communication Services People, My Swiss roommate discovered, in soc.culture.swiss, that the Swiss phone book is available electronically. Issue `telnet etv.switch.ch' with a username of `ETV' to access it. German, French, Italian, and English interfaces are available. Eric De Mund ------------------------------ From: dlanglan@urbana.mcd.mot.com (David Langlands Tech Pubs Intern) Subject: Is There a Sprint 1-800 Number? Date: 16 Feb 1994 23:58:25 GMT Organization: Motorola Computer Group, Urbana Design Center Hi everyone, Does Sprint have an alternative to the 103330 sequence like AT&T has with the 102880? I'm looking to place a direct-dial credit card call from a PBX which will not let me call 103330. Thanks for any information, Regards, David S. Langlands dlanglan@urbana.mcd.mot.com Motorola, MCG, Urbana Design Center Technical Publications Intern 1101 University Avenue, Urbana, IL 61801 University of Illinois '94 [TELECOM Digest Editor's Note: At least where Sprint FONCARDs are concerned, you can use 1-800-877-8000. Listen for the computer tone then dial 0 + area + number. Listen for the tone again, and enter your fourteen digit (typically phone number plus four digit pin) FONCARD number. To make multiple calls, do not hang up. Press the # key for one full second, then when you hear the tone start over with 0 + area + number for the next call, etc. No card number needed for second and subsequent calls. For international calls, substitute 01 for 0, then dial the country/city code and number. I do not know if this will work for other credit cards as well, but you can contact Sprint customer service to inquire at 1-800-877-4646. PAT] ------------------------------ Date: Wed, 16 Feb 94 13:51 EST From: The Network Group <0004526627@mcimail.com> Subject: Need Information About Telemate I have a client that is using a PC to capture SMDR data and somehow import it to a program called Telemate. I need to get any information on who manufactures Telemate. I have been unsuccessful in my attemps to find this company. Any help you can provide is appreciated. Thanks in advance. Al Cohan The Network Group ------------------------------ From: dagans@zydacron.com (Dave Agans) Subject: Simple Phone Set Sources Wanted Date: Wed, 16 Feb 1994 11:26:13 Organization: Zydacron, Inc Hi, I'm looking to resell a desktop computer-based phone system. The minimum requirement for the phoneset is a handset for private conversations, a microphone and speaker for "speakerphone" conversa- tions, a hookswitch for pickup and hangup, and a speakerphone mode button. Dial keypad is optional. It would be very nice if the interface to this was microphone and speaker, with a couple of switch contacts, rather than the standard POTS current source powered line interface. It's also a requirement that the "speakerphone" mode NOT have echo suppression -- I do full duplex echo cancellation in the PC. Anybody know of such a device, or a source I can ask? You can email me at dagans@zydacron.com. Thanks, Dave Agans ------------------------------ From: Ellis Claggett Subject: DSU Comparison Matrix Date: Wed, 16 Feb 94 11:20:00 PST Is there any one out there who has done or has access to a comparison matrix of DSU's? My company is looking at standardizing on a single vendor or as few as possible and I would like to get a copy of an existing matrix to make my job a little easier. If anyone can help, my contact information is listed below. Ellis. R. Claggett Voice 410/332-3679 Fax 410/332-3221 claggette@bsp03c.primerica.com ------------------------------ Date: Thu, 17 Feb 94 00:22:43 CST From: varney@ihlpe.att.com Subject: Re: Need Information on ISDN Phones Organization: AT&T In article btaylor@csuchico.edu (Beverly Taylor) writes: > In article , The Network Group <0004526627@ > mcimail.com> wrote: >> I need to know a source for ISDN phonesxxx -- excuse me: voice >> terminals. >> I have heard that AT&T has a few of these but haven't heard of any >> other manufacturers such as Northern Telecom or others. Apparently the >> Northern product for Meridian Digital Centrex is not an ISDN phone. > We have used TelRad, Fujitsu, and AT&T ISDN sets. They're all used to > run on an AT&T 5ESS. We're very satisfied with all of them and have > only found these three will work with our CO switch. The Compatibility Table for the 5ESS(tm) switch "Custom" ISDN interface lists NEC and a vendor called "GPT" as additional vendors of ISDN VOICE terminals. Most offer various configurations with/with-out data or packet capabilities. There are an additional dozen or so vendors of ISDN "boards" and interfaces supporting data-only capabilities. I believe Bellcore lists vendors that support the National-1 ISDN interface. These should all work with the 5ESS switch (on 5E8 and later). Al Varney ------------------------------ Date: Wed, 16 Feb 1994 11:29:17 CST From: Bill Bradford Subject: Re: Tropez 900Mhz Cordless PHones We've got one of the Tropez phones here in the Computer Science department at the University of Science and Arts of Oklahoma, where I am a workstudy. It works great. The previous manager of the DP department bought it because of it's "impervious-ness" to interference, and we've never had any static on it, even two rooms away in a lab full of twenty 486 boxes. My favorite feature is the ability to pick up the phone and NOT have to hit the "answer" or "phone on" button, like most other cordless units. Bill Bradford * stubradfowc@mercur.usao.edu ------------------------------ From: mikey@sgi.com (Mike Yang) Subject: Re: VTech 9 "Tropez" and Sony SPP-ER1 900 MHz Phones Organization: Silicon Graphics, Inc. Date: Wed, 16 Feb 1994 18:00:50 GMT In article rob@xyzoom.info.com (Rob Lingelbach) writes: > When I went back to the store the salesman talked me into the new Sony > SPP-ER1 900 Mhz model, which was 299$ (compared to 187$ for the > VTech). I brought it home, and the sound quality is even worse than > the VTech! Funny, I didn't notice any quality difference between my ER1 and my old SPP-180. The dial-tone sounds terrible on the ER1 (I don't know why), but the voice quality is great (maybe my ears are just not very discerning). I was pleased to get a phone with a little better range than my three-year old SPP-180 that was showing signs of age. I settled for danalog 900Mhz because the digital one I tried (Cobra/Escort) had a noticably poorer sound quality and I read about the VTech and AT&T 9100 limitations. Interestingly, I tried the new Sony 49Mhz models and fonud that their line quality was noticably worse than their older models, interference-wise. I like the extremely-long stand-by time of the ER1 when the ringer is (I can hear the other phones in my house ring, thank you, and enjoy the challenge of trying to remeber where I left the cordless last). I only have to charge it overnight once every three or four weeks. The Cobra, with no ringer-off switch, required charging every two days. What pain. Mike Yang Silicon Graphics, Inc. mikey@sgi.com 415/390-1786 ------------------------------ From: Steve Bryan Subject: Re: VTech 9 "Tropez" and Sony SPP-ER1 900 MHz Phones Organization: Sexton Software Date: Thu, 17 Feb 1994 00:57:08 GMT In article Rob Lingelbach, rob@xyzoom. info.com writes: > Last night I brought home a VTech "Tropez" 900 Mhz cordless phone, and > I was very disappointed with the sound quality. A constant hiss and > limited frequency response made my older Sony 49 Mhz cordless sound > great (which it really isn't, compared to other 49 Mhz phones). I bought the base model 900 MHz phone from VTech. My first impression was similar to yours, ie there was what sounded like an annoying hiss when listening to the dial tone. For use in actual calls I have found the sound quality to be quite good and the range is excellent. I can leave my office on the sixth floor of my office building and eat at the restaurant on the ground floor and still get phone calls. In particular the sound quality is definitely better than the Motorola cordless phone that I have at home. With it a caller can clearly tell a cordless phone is in use. That is not what I've heard from callers when I've used the VTech phone at my office (ie it seems to be as good as a regular phone). Steve Bryan ------------------------------ From: mds@access.digex.net (Michael D. Sullivan) Subject: Re: Digital Cellular Phones Date: 17 Feb 1994 03:04:25 GMT Organization: Express Access Online Communications, Greenbelt, MD USA jweinber@ccgate.tfincc.DLJ.COM writes: > I was talking to someone the other day, and he told me that the latest > and greatest in cellular phones was digital. Apparently, you get one > of the newer generation phones and you are connected over a digital > link rather than an analog one. How does this work? He said > something about not getting "bumped off". I was kinda in a rush, so I > did not get the full story from him. Also, does the service provider > need to have digital capabilities, or do they all have them by > default. Any information on this would be appreciated. The carrier has to have digital capability. There are two types of digital cellular -- TDMA and CDMA. TDMA is first to market; CDMA is coming soon. Using a TDMA digital phone in a CDMA system will default to analog (all phones on the market and likely to come on the market are dual-mode, digital and analog). The cellular carrier sets aside a subset of channels (in TDMA) for digital transmissions. Phones with TDMA capability are autodetected when call setup takes place, and a digital voice channel is assigned if available, with analog used if none are available. Analog phones use only the analog channels, so the digital user has a greater probability of having calls go through during busy hour. Michael D. Sullivan mds@access.digex.net avogadro@well.sf.ca.us Washington, D.C. 74160.1134@compuserve.com mikesullivan@bix.com ------------------------------ Date: Thu, 17 Feb 94 02:53:02 GMT From: Alex Cena Subject: Re: Digital Cellular Phones jskene@delphi.com wrote: > Digital cellular phones digitize your voice in the phone itself, then > compress the signal by a factor of 3-20 before transmiting to the base > station. This allows a given radio bandwidth to carry more channels, > resulting in less congestion. Other benefits include better voice > quality (see below), future high-speed data capability, more secure > conversation, and more immunity from toll fraud. One characteristic > of digital cellular, however, is the small added delay in the coding > process, which causes echo to be heard by the cellular subscriber. > This echo can be eliminated through the use of a high-quality echo > canceller. Is delay a characteristic of both digital cellular standards in the US? > Echo cancellers are now being developed specifically for > digital cellular, and can feature background noise cancellation also, > providing even better call quality compared to analog systems. Some > service providers will offer you a dual-mode phone, which can operate > either in analog or digital modes, allowing you to use the older as > well as newer networks. In fact, the TDMA phones offered McCaw and Southwestern Bell in are dual-mode that will operate in the Digital/TDMA mode in areas w/that service or Analog/AMPs if TDMA is not available in the service area. BTW, I would be interested in hearing comments from users (actual service or participants in trials) of digital cellular regarding their experiences with it, especially service quality relative to current analog. > Future cellular networks are expected to be all-digital, due to the > bandwidth efficiency, network control, call quality and fraud > resistance they offer. It is difficult for me to imagine an all digital cellular network since I still have not made the switch to CD players and I am quite satisfied with my 15 year old cassette player. Analog still has quite a bit of life in it since carriers and manufacturers have done an excellent job extending its useful life and capacity. i.e. dynamic frequency allocation, mini-cell sites, NAMPs, etc. Moreover, carriers that migrate to CDMA (i.e. US West New Vector, Bell Atlantic Cellular, Pactel Cellular and Alltell) essentially can double their capacity by allocating 10% of their bandwidth to digital. Thus, those carriers will have sufficient capacity to meet its anticipated growth needs, technology to offer enhanced services such as integrated paging, short message service, data, PCS like services, etc as well as segment prices based on quality of service, by migrating their spectrum in 10% increments over time. While we are on the subject of wireless technology, can someone provide me the details or the specs on WACS? Alex M. Cena, Lehman Brothers, acena@lehman.com ------------------------------ From: jrg@rahul.net (John Galloway) Subject: Re: Digital Cellular Phones Organization: a2i network Date: Thu, 17 Feb 1994 01:21:55 GMT In article , wrote: > Digital cellular phones digitize your voice in the phone itself, then > compress the signal by a factor of 3-20 before transmiting to the base > station. [deleted] > Future cellular networks are expected to be all-digital, due to the > bandwidth efficiency, network control, call quality and fraud > resistance they offer. How are digital systems more fraud resistant? I assume you are talking about the folks that listen in on the cellular frequencies and pull your phone ID out (by using one of the decoder boxes specifically designed to do this) and use it to program another phone that they sell to someone. Since the decompressor circuit most be in the phone it will be widely available and known so the jerks building the decoder boxes should have no problem incorporating that into their systems. right? internet jrg@galloway.sj.ca.us John R. Galloway, Jr 795 Beaver Creek Way applelink D3413 CEO...receptionist San Jose, CA 95133 Galloway Research (408) 259-2490 ------------------------------ End of TELECOM Digest V14 #87 ***************************** ------------------------------------------------------------------------------- Downloaded From P-80 International Information Systems 304-744-2253