Title: Hybrid and Satellite Communication Networks
Guest editor: Anthony Ephremides (tony@eng.umd.edu)
Univ. of Maryland
College Park, MD 20742, USA
Title: Channel Access in Wireless Networks
Guest editors: Ioannis Stavrakakis (ioannis@cdsp.neu.edu)
Lazaros Merakos (merakos@neu.edu)
Title: Free-Space Optical Local-Area Networks
Guest editors: Joe Kahn (jmk@eecs.berkeley.edu)
Georgia Inst. of Technology
John Barry (barry@ee.gatech.edu)
Univ. of California at Berkeley
****** JOURNAL DESCRIPTION ******
Aims & Scope:
The wireless communication revolution is bringing fundamental changes
to data networking, telecommunication, and is making integrated
networks a reality. By freeing the user from the cord, personal
communications networks, wireless LAN's, mobile radio networks and
cellular systems, harbor the promise of fully distributed mobile
computing and communications, any time, anywhere. Numerous wireless
services are also maturing and are poised to change the way and scope
of communication. The journal will fill an existing gap by focusing on
the networking and user aspects of this field. It will provide a
single common and global forum for archival value contributions
documenting these fast growing areas of interest.
The journal will publish refereed articles dealing with research,
experience and management issues of wireless networks. Its aim will be
to allow the reader to benefit from experience, problems and solutions
described. Regularly addressed issues will include: Network
architectures for Personal Communications Systems, wireless LAN's,
radio, tactical and other wireless networks, design and analysis of
protocols, network management and network performance, network
services and service integration, nomadic computing, internetworking
with cable and other wireless networks, standardization and regulatory
issues, specific system descriptions, applications and user interface,
and enabling technologies for wireless networks. The journal will also
publish special issues devoted to topics of particular interest to the
readers. Proposals for special issues can be submitted to the
Editor-in-Chief.
Article submission:
Manuscripts must be submitted in five copies to the Editor-In-Chief:
Professor I. Chlamtac,
Department of Electrical and Computer Engineering
University of Massachusetts,
Amherst MA 01003, USA
All manuscripts will be refereed. The final decision of publication will be
taken by the Editor-In-Chief. Manuscripts for publication must be written
in English and typed double-spaced on one side of the page only with wide
margin. They must begin with the title, the authors' names and addresses,
and a self-contained abstract. The same manuscript must not be submitted,
in any language, for publication elsewhere. The copyright of a paper
accepted for publication transfers automatically to the Publisher. 25
reprints will be made available free of charge to authors. After acceptance
of their paper, authors are invited to send a diskette with the TEX (or
LATEX or AMS-TEX) source of their paper together with a hard copy including
the letter of acceptance to the Editor-in-Chief.
Editorial Board
Anthony S. Acampora (Columbia University, New York, USA)
Hamid Ahmadi (IBM, Watson Research Center,
Yorktown Heights NY, USA)
Ian Akyildiz (Georgia Inst. of Technology, Atlanta GA, USA)
Robert R. Boorstyn (Polytechnic Inst. of NY, New York, USA)
Jin-Fu Chang (National Taiwan University, Taiwan)
Magda El Zarki (Univ. of Pennsylvania, Philadelphia PA, USA)
Anthony Ephremides (Univ. of Maryland, College Park MD, USA)
Luigi Fratta (Polytecnico di Milano, Milano, Italy)
Robert Gallager (MIT, Cambridge MA, USA)
Bezalel Gavish (Vanderbilt University, Nashville TN, USA)
Mario Gerla, (UCLA, Los Angeles CA, USA)
Zygmunt Haas (AT&T, Holmdel NJ, USA)
Pierre Humblet (Eurocom Institute, Sophia Antipolis, France)
Chih-Lin-I (AT&T, Holmdel NJ, USA)
Leonid Kazovsky (Stanford, Stanford CA, USA)
Shay Kutten (IBM, Yorktown Heights NY , USA)
Leonard Kleinrock (UCLA, Los Angeles CA, USA)
Hisashi Kobayashi (Princeton University, Princeton NJ, USA)
Victor Li (USC, Los Angeles CA, USA)
Jon Mark (Univ. of Waterloo, Waterloo ONT, Canada)
Laszlo Pap (Tech. U. Budapest, Budapest, Hungary)
P. Papantoni-Kazakos (University of Ottawa, Ontario, Canada)
Raymond Pickholtz (George Washington Univ., Washington DC, USA)
Stephen S. Rappaport (SUNY, Stony Brook NY, USA)
Tom Robertazzi (SUNY, Stony Brook NY, USA
Raphael Rom (Technion, Haifa, Israel)
Izhak Rubin (UCLA, Los Angeles, USA)
Krishan Sabnani (AT&T, Murray Hill NJ, USA)
William Sander (Army Research Office, NC, USA)
M. Schwartz (Columbia Univ, New York NY, USA)
Nachum Shacham (SRI Intnl, Menlo Park CA, USA)
Moshe Sidi (Technion, Haifa, Israel)
Khosrow Sohraby (Univ. of Missouri at KC, MO, USA)
F.A. Tobagi (Stanford Univ., Stanford CA, USA)
Andrew J. Viterbi (Qualcomm Inc., San Diego CA, USA)
------------------------------
From: dandodson@aol.com (Dan Dodson)
Subject: Looking For CLASS Serial Port Device
Date: 7 Sep 1994 11:31:06 -0400
Organization: America Online, Inc. (1-800-827-6364)
I'm looking to OEM an inexpensive CLASS device to support Caller Line
ID and autodialing from a PC. We will bundle it with our Mac and PC
software. A driver will be written to integrate the capabilities of
the device into our software product.
I'm with a large telecommunications firm and would appreciate all
correspondence via E-Mail to dandodson@aol.com.
Thansks,
Dan
------------------------------
From: ladybug040@aol.com (Ladybug040)
Subject: Modems in Germany
Date: 7 Sep 1994 09:56:11 -0400
Organization: America Online, Inc. (1-800-827-6364)
please reply to ******* satterfield@conti.de
Hi I'm an American recently assigned to Germany for my company for one
year. As I have not yet been able to reestablish direct Internet
access this is being posted on my behalf by a friend. The subject of
this message is the reason why I do not yet have direct net access.
Anyway, after resolving all sorts of problems with getting my American
computer operational here in Germany (problems mostly related to
different electrical standards) my computer is now working more or
less satisfactorily EXCEPT that I can't get the modem to connect
through the German phone system. I need some clues and advice on what
to try to resolve this and have a few questions.
Can I expect any problems with operating an American modem with the
German phone system? If I replace my modem should I replace it with
one of a German source or can I order one from America? Will a German
modem work with my American computer? Will it work with the American
phone system? The initial error I was recieving from my modem is "no
dial tone" yet the phone appears to be working fine otherwise. Are my
problems software or hardware related or some combination thereof?
(operator error?)
Please, I am suffering severe online withdrawal and have GOT to get
reconnected!! Any advice or suggestions gratefully appreciated.
Please reply to:
satterfield@conti.de
Thank you,
Tom Satterfield
------------------------------
From: orfanosg@aol.com (Orfanosg)
Subject: Paging Systems and Hardware
Date: 7 Sep 1994 15:55:04 -0400
Organization: America Online, Inc. (1-800-827-6364)
Can anyone provide (or tell me where to get) info on paging systems
and hardware? I am looking for full system configuration/tech.
specs/pricing and regulatory info.
Thanks for your help.
------------------------------
Date: Wed, 7 Sep 94 10:24:50 EDT
From: Carl Moore <cmoore@ARL.MIL>
Subject: 1957 Note on Pagers
Wilmington (Del.) Morning News, Tuesday, April 9, 1957; page 27,
column 6 of 8
CALLING DR. KILDARE. BOSTON (AP) -- A $10,000 doctor-radio paging
system has been installed at Beth Israel Hospital. Pocket radios are
now standard equipment for all physicians serving the hospital. A
doctor's code number is beeped to the radio clipped to his pocket.
This signal comes from a transmitter installed near the telephone
switchboard.
[TELECOM Digest Editor's Note: My first experience with pagers was
around 1960 or so when I was working at the University of Chicago and
they installed a paging system in the hospitals. My first personal pager
was a few years after that when Illinois Bell started selling a service
called 'Page Boy'. It was just a beeper without voice or text capability.
Around 1970 or so I got one of the (then) new 'talking pagers'. On those
the caller's voice actually came out through the speaker. Everyone had
to dial the same seven digit number if they had touchtone service, and
then enter the five digit number of the paging unit. After a 'beep tone'
they had ten seconds to record a message which was then relayed over
airwaves to the pager a few seconds to a minute later as air traffic
permitted. After getting the message you had to press a little button
on the unit to squelch it again; otherwise you got to listen to all the
other pages which followed yours, along with dead air (what little there
was of it).
There were only a couple of answering services in Chicago which
offered paging services. If your answering service did not offer
paging, then they brokered it for you from an answering service which
did. I subscribed to Annex Answering Service for a couple of years and
they had pagers. Their antenna was on the roof of the Chicago Temple
Building, which was also the building where Annex Answering Service was
located. There was only one frequency for all voice paging units, and
it was quite busy. If you left your unit unsquelched just to listen,
there was rarely any dead air except maybe in the middle of the night.
The answering service operators would never shut up, and they had to
contend for air time with each other and with the general public using
touchtone phones to page directly. Rotary dial users called a certain
number which went to Rogers Radio Paging and passed their message to
operators who repeated it over the air for them. The frequency was so
busy that sometimes pages were delayed 5-10 minutes in getting out; even
the ones sent directly via touchtone phone in the caller's voice would
get backlogged in the machine, which itself contended with the live
operators ... and those women were fast at seizing the circuit going
across town to Annex's tower on the Chicago Temple Building downtown.
To make it worse, the frequency was shared by two mobile phone users who
had some type of radio equipment long pre-dating cellular phones. There
were just two of them, but they would sometimes makes calls from their
car and tie up the frequency for five minutes or so. I gave myself a
test page one day and five minutes later it had not come through the
unit I was carrying, so I opened the squelch to see what was going on.
This guy with his car phone was talking! He gave some sort of signal
to the answering service serving him that he was finished. The operator
came on, "This is Rogers are you clear?" No he says, I need to make
another quick call. He passed that number to her and she dialed it then
must have gotten busy and forgotten to supervise the call, since the
number turned out to be disconnected and an intercept recording came
on. He hung up right away, but the answering service operator forgot
all about him and that blasted intercept recording played for five
minutes over and over and over .... 'the number you have dialed is
not in service please check the number and dial again.' Someone must
have called from one of the other answering services and told them
to pull the cord down; after endless repeats of the 'not in service'
recording all of a sudden it stopped and a woman's voice came over
the pager, "This is Rogers are you clear?" and getting no response
after asking a second time saying "Rogers is clear, KOH761 the Rogers
Telephone Answering Service is clear" ...
Of course *instantly* it was seized again and the long backlog of
pages pushed through the circuit. All the operators from Annex, General
Telephone Answering Service, Illinois Bell and everyone else with pager
subscribers started their stuff moving; stuff that had been sitting
for 15-20 minutes in the queue waiting. My test page came through about
15 minutes after that. The operators all had a little light on their
switchboard which illuminated when the circuit to the tower was in use.
They'd sit there staring at that little light; when it went out the one
with the fastest response to the keys on her switchboard was the winner
and got her page out next. The automated machine for touchtone subscribers
was the fastest of all. It always got the circuit first if it had stuff
waiting. Some days the system did not work right at all; in theory the
person getting the circuit to the tower excluded everyone else in the
process; if that did not work the answering services would keep a radio
turned on listening for dead air to get their chance; but the operators
did not care. Very discourteous at times and overwhelmed with pages, they
would walk all over each other's transmissions; some would just open the
key and start talking. Individual, or DID numbers for pagers did not start
until sometime in the 1980's. Before then it all went through answering
services on a single switchboard number at each service, and until the
middle or late 1970's to a tower-in-common shared by all and actually
owned by Annex, at least here in Chicago.
The individual units we carried weighed about five pounds and were about
six inches long by two inches or so wide. We used big Ni-Cad batteries
that sort of resembled 'C' batteries today. You put the unit in the
charger at night and got 10-12 hours of use the next day provided you
did not leave the squelch open all the time to snoop on other subscribers
and the messages they were getting. PAT]
------------------------------
Date: Wed, 31 Aug 94 8:19:26 CDT
From: ROsman@swri.edu
Subject: Radius Pager Question
> it has volume and on/off and stuff. But one thing which I couldin't
> figure out, is why it has this white button, and when you press it,
> you hear everything (static when nothing is being broadcast, or tones
> then voice when a page is going on) on the freq that the crystal in
> the pager is tuned to. What would the point of having a button where
> you could hear any page be? You have to hold down the button and you
> hear whatever is on the frequency that it is tuned to, and when you
I think that the pager you reference opens the speaker for a fixed
time period and the button allows the user to hear long pages.
In the early days of paging your pager beeped and you had to hold a
button down to hear the page. Users got in the habit of using that
button for setting volume, too. Later (still first generation) pagers
would beep, and then open the speaker automatically. The button then
did double duty, open the speaker (squelch, if you like) and reset the
circuit closing the speaker. Later generation pagers auto-reset after
a fixed (often programmable) time.
[TELECOM Digest Editor's Note: On ours, the speaker would stay open
forever, unsquelched once the answering service set it off until/unless
the subscriber pressed the button to silence it again. Once I was riding
home from downtown in a cab and forgot my pager which I left laying on
the back seat of the cab. I no sooner got in my house than I realized
what I had done. Solution: called the pager and gave a message saying,
"cab driver! please drive back here immediatly with the pager and I
will pay the fare for your trip." I called the pager two or three
times with that message and sure enough in five minutes or so the
cab driver pulled up to my door. The answering service contracts all
warned against leaving the speaker open to monitor others. It was,
they said, in violation of the tariff to spy on other subscribers and
cause for your service to be terminated. PAT]
------------------------------
From: joet@xmission.com (Joe Terry)
Subject: Mitel SX200 Light Pinouts
Date: 7 Sep 1994 10:34:27 -0600
Organization: XMission Public Access Internet (801-539-0900)
I am in the process of moving a Mitel PABX this weekend and nee some
pinout/configurations information to hook up telephones, T1's, etc.
Is there anyone out there in netland that could fax or email me some
information or perhaps give me some phone assisstance. Please let me
know via email. Thank you very much.
Joe Terry Sandy, Utah
joet@xmission.com
------------------------------
From: ead@netcom.com
Date: Wed, 7 Sep 1994 10:11:16 -0700
Subject: Forcing Calling Card Provider to Refund Credit Balance
Reply-To: <ead@netcom.com>
Organization: Netcom
Folks,
I've got a credit balance on one of my long distance calling cards.
The calling card provider all but refuses to refund this balance to
me. I have not used this card in at least a month, and don't intend to
use it until they refund this balance.
They're located in Ohio and I'm located in California. Which state's
public utilities commission do I file a complaint with? I'm certain
this practice must be in violation of their tariff, if not the law.
(They say they will not refund the balance unless I close the
account.)
Thank you,
Eric De Mund <ead@netcom.com>
[TELECOM Digest Editor's Note: Before complaining, check your contract
with that carrier and see if they are required to refund credits on
still open accounts. Under the rules, they may not have to. PAT]
------------------------------
From: dank@alumni.caltech.edu (Daniel R. Kegel)
Subject: On-Line Info About ISDN Available Free via WWW
Date: 7 Sep 1994 23:38:47 GMT
Organization: California Institute of Technology, Pasadena
Those interested in ISDN might find my WWW page a good place to start
when looking for vendors, carriers, or technical info. You'll need
Internet access and Mosaic or any other Web browser; it's at
http://alumni.caltech.edu/~dank/isdn/.
Enjoy,
Dan
------------------------------
From: wes.leatherock@oubbs.telecom.uoknor.edu
Date: Wed, 07 Sep 94 08:50:36
Subject: New Fiber Service in Oklahoma
{The Daily Oklahoman} (Oklahoma City, Oklahoma) for
September 3, 1994, reports that another competitive access provider is
building a fiber optic network in Oklahoma City.
Brooks Fiber Properties, Inc., of St. Louis said it is
building a fiber optic network of 33 route miles her pa.
ch wa> ave accaWnvwork d oted m IL Ud air om
Serv> aach i ght not udance---- in mnarde terminated. o
------------------------------
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