TELECOM Digest     Mon, 6 Mar 95 16:41:00 CST    Volume 15 : Issue 136

Inside This Issue:                          Editor: Patrick A. Townson

    Portable Computer and Wireless Exposition and Conference (Lawrence 
Grant)
    We Need a TDM; What Will Work For an Internet Provider? (Bruce M. 
Hahne)
    Book Review: "DNS and BIND" by Albitz/Liu (Rob Slade)
    GSM Rental in Germany (John R. Covert)
    Information Wanted About MFS Intelenet (Timothy D. Hunt)
    Video Dialtone, HFC, HDSL, or ADSL (Timothy Kreps)
    PHS Doesn't Work in Moving Vehicles? (Steve Samler)
    Switched 56 CSU/DSU Vendor Information Wanted (Bruce Parks)
    Re: AT&T Offers 'International Redial' (Steve Brack)
    Re: PBS Rumors and Innuendo: Any Truth? (Charles McGuinness)
    Re: Re: E(TACS) and GSM (Sergei Anfilofiev)
    Re: mu-law to a-law PCM (Finn Stafsnes)
    Re: AT&T Calling Card Mixup (Robert Scott)
    Re: New NPA in Colorado (Stan Schwartz)
    Re: New NPA in Colorado (Mike King)
    Re: New NPA in Colorado (David C. Bray)
    Re: 800 Directory Listings Wanted (stanford@algorhythms.com)
    Re: 800 Directory Listings Wanted (Fred Goodwin)
    Re: 800 Directory Listings Wanted (Carl Moore)
    Management Software Wanted (Rick J. Dosky)

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----------------------------------------------------------------------

From: ir000579@interramp.com (LAWRENCE GRANT)
Subject: Portable Computer and Wireless Exposition and Conference
Date: 5 Mar 1995 17:55:27 GMT
Organization: LAPTOP EXPOSITIONS


This is our eighth year Portable Computing & Wireless Communications
Exposition & Conference held at THE NEW YORK HILTON, 1335 6th Ave,
New York NY,March 9th and 10th. 

The Exposition features all solutions under one roof, revolutionary
PCMCIA intro's, working pen applications, new PDAs, PICs and Palmtops, 
InfraRed Intro's and IRdA, wireless communications and PCCA focus.  At
the Conferences and special hospitality functions,hear from our fifty
industry experts and learn the latest on Laptops, EMail Services, LAN,
WAN, Radio and Cellular Transmissions, System Security, integration and 
much more.

In this fast changing era of field automation,you have to compete to
survive. The information and contacts you make at the seminars,will be
invaluable to you and your company.

For more information and FREE pre-registration contact LAPTOP 
EXPOSITIONS:
(800) 444-EXPO, (212) 682-7968 or FAX: (800) 569-LAPS.

------------------------------

From: hahne@gol.com (Bruce M. Hahne)
Subject: We Need a TDM; What Will Work For an Internet Provider?
Date: 6 Mar 1995 14:29:09 -0600
Organization: UTexas Mail-to-News Gateway


I'm no telco engineer, so hopefully somebody can give me a few
pointers as to the right product(s) for this application.  My guess is
that I just need the right mux, but maybe I'm missing something.

The goal is to bring in several sub-T1 leased connections, muxed over
a single T1, and then break them out into separate lines again so that
they can be fed into an Internet router such as a Cisco 7000 (or
choose your favorite high-end IP router).  Our site is at the hub as
the (small but growing fast) Internet provider, and of course the
sub-T1 connections are downstream sites such as businesses and
organizations.

Life gets a lot more interesting when you throw in the fact that we're
in Japan.  However, I don't believe that this changes the possible
technical solutions; it's probably just going to limit the equipment
that we're legally allowed to buy.

The picture looks something like this:

leased-line ----                                        ----- Cisco 7000 
port
customer        \                                      /
                 \                                    /
                  \     fiber T1      NTT            /
leased-line ----- MUX1 -------------- DSU ---- TDM?? -------- Cisco 7000 
port
customer          /     to our site                  \
                 /                                    \
                /                                      \
leased-line ---                                         ----- Cisco 7000 
port
customer


(Yes, T1 has to be pulled in over fiber in Japan).

MUX1 is provided on our behalf by the phone company and is physically
done at an NTT site.  The DSU comes from NTT also.  But what goes
beyond the DSU is our problem.

What I need information on is the "TDM??" piece above.  It needs to be
some sort of demux that goes from the DSU (which probably uses an RJ45
connector, and is definitely an I interface) to either V.35 connectors
or RS449 connectors, since a Cisco understands V.35 and RS449.  Any
suggestions?  There must be a canonical solution to this problem, right?

More generally, is this the best way to pull in the multiple downstream 
clients, or is there a better method (perhaps an IP router that can
split the T1 apart internally?)

Feel free to bombard me with solutions, sales pitches, equipment lists,
blatant advertising for telco gear, whatever.  It's often tough to get
information on IP and telco gear in Japan so I always welcome
literature.

If you're asking "why mess around with fractional T1; why doesn't
everybody go for straight T1?", the answer is that Internet connections
are so expensive here that only top-level providers can afford a T1.  In
fact, right now the _entire_ commercial Internet bandwidth coming into
Japan is less than T1!


Thanks,

Bruce Hahne    Engineer, Global OnLine Japan
hahne@gol.com  Oshima Building 302
1-56-1 Higashi Nakano
Nakano-ku, Tokyo 164, Japan

------------------------------

Date: Mon, 06 Mar 1995 15:26:14 EST
From: Rob Slade <roberts@mukluk.decus.ca>
Subject: Book Review: "DNS and BIND" by Albitz/Liu


BKDNSBND.RVW   950131
 
"DNS and BIND", Paul Albitz/Cricket Liu, 1992, 1-56592-010-4
%A   Paul Albitz
%A   Cricket Liu
%C   103 Morris Street, Suite A, Sebastopol, CA   95472
%D   1992
%G   1-56592-010-4
%I   O'Reilly & Associates, Inc.
%O   800-998-9938 707-829-0515 fax: 707-829-0104 info@ora.com or 
nuts@ora.com
%P   381
%T   "DNS and BIND"
 
Of the millions of users on the Internet, almost all are blissfully
unaware of the complexity and magnitude of the task of network
routing.  How does the network know where to deliver a piece of email?
In fact, given the packet nature of all Internet traffic, how do
telnet or ftp packets get, reliably and generally quickly, to their
destination?  Few even recognize the term DNS, the Domain Name
Service, which handles the problem.  Administrators may have used
BIND, the Berkeley Internet Name Domain program, to manage DNS, but
may not fully understand the importance, use or finer aspects of it.
This book gives both background and operational details.
 
Given the nature of the netowrk routing problem, a full understanding
of DNS likely requires actual hands-on work.  Albitz and Liu have,
however, put together clear, straightforward, and sometimes even
lighthearted text to make the learning process as painless as
possible.
 

copyright Robert M. Slade, 1995   BKDNSBND.RVW   950131. Distribution
permitted in TELECOM Digest and associated publications. Rob Slade's
book reviews are a regular feature in the Digest.


Vancouver      ROBERTS@decus.ca    
Institute for  Robert_Slade@sfu.ca 
Research into  rslade@cue.bc.ca    
User           p1@CyberStore.ca    
Security       Canada V7K 2G6      

------------------------------

Date: Mon, 6 Mar 95 11:54:29 EST
From: John R. Covert <covert@covert.enet.dec.com>
Subject: GSM Rental in Germany


I want to rent a GSM phone with a German number in Germany in about
three weeks, but I can't find any rental companies.  I'll be in
Germany for about nine days.

I travel to Germany every year about this time, and since 1989, I have
been able to rent telephones, through Budget rent-a-car, through
Lufthansa, and last year through a small company which was in the
process of going out of business even as I was renting from them.

My investigations so far have yielded nothing.  Noone is willing to
rent a phone.  Budget no longer has portables; only phones built into
the cars.  Lufthansa is out of the rental business, as it seems
everyone is.  Too many problems with people running up horrendous
international call bills and then disappearing.

I want a German number.  This may not be possible.  I'm also
investigating buying a phone and signing up for a whole year's service
in the U.K., since I expect to be there for a few weeks this summer on
a separate trip, but even that may not be a real possibility, since I
don't have residency in the U.K.  At least in the U.K. rentals are
available.  But buying a phone and a year's service would cost about
$700, not including call charges.

If anyone can give me a contact to someone who _is_ renting phones in
Germany, please send me mail as well as reporting back to the list.
Please avoid the temptation to reply "I think so-and-so rents phones"
without first checking to make sure they still do.


/john


[TELECOM Digest Editor's Note: John Covert is a *long time* participant
in this Digest. I think he is a charter subscriber on the mailing list,
going back to 1981. He has written to us in the past about his trips to
Germany, and perhaps will do so again when he returns. If any of our
readers in Germany can research this for him and report back to him in
a timely way, I know he will appreciate it.   PAT]

------------------------------

From: tim@karl.fsg.com (Timothy D. Hunt)
Subject: Information Wanted About MFS Intelenet
Date: 6 Mar 1995 14:22:56 -0500
Organization: Fusion Systems Group, Inc.


We have just switched our local phone service to MFS Intelenet.

I would be interested in hearing from other MFS customers,
especially in the New York area.


Tim Hunt   tim@fsg.com

------------------------------

From: tkreps@netcom.com (Timothy Kreps)
Subject: Video Dialtone, HFC, HDSL, or ADSL
Organization: NETCOM On-line Communication Services (408 261-4700 guest)
Date: Mon, 6 Mar 1995 19:34:15 GMT


Where can I find info or discussions on:

  - video dialtone,
  - Hybrid Fiber/Coax (HFC),
  - High-bit-rate Digital Subscriber Lines (HDSL), or
  - Asymmetric Digital Subscriber Lines (ADSL)


Timothy Kreps   tkreps@netcom.com


[TELECOM Digest Editor's Note: You'll find those discussions right here
when they start from time to time. Feel free to present questions and
comments.   PAT]

------------------------------

Date: Mon, 6 Mar 1995 14:33:26 EST
From: Steve Samler <steve@individual.com>
Subject: PHS Doesn't Work in Moving Vehicles?


I read in {Kyodo} today that the Japanese PHS phones do not work in
moving vehicles.  Is this due to the Doppler effect?

------------------------------

From: ucbruce@nova.umuc.edu (Bruce Parks)
Subject: Switched 56 CSU/DSU Vendor Information Wanted
Date: 5 Mar 1995 21:30:40 -0500
Organization: University of Maryland University College


I'm looking for a potential source for 50-100 switched 56/64 CSU/DSUs
on behalf of a government agency.  I would appreciate any referrals.


Thanks,

Bruce J. Parks

------------------------------

Date: Sun, 5 Mar 95 22:32:42 -0500
From: Steve Brack <sbrack@cse.utoledo.edu>
Subject: Re: AT&T Offers 'International Redial'


In article <telecom15.122.3@eecs.nwu.edu> telecom@eecs.nwu.edu (TELECOM 
Digest
Editor) wrote:

> A new service from AT&T allows subscribers who make a lot of
> international calls to cut through the wasted time so prevelant when
> calling many international points with no circuit messages, busy
> signals and such.

> Nothing comes free:  The cost is $3.00 per month, and it only works
> to about twenty countries at the present time, however those twenty
> include a few that are notorious for sending back that message saying
> 'your call cannot be completed in the country you dialed at this
> time'.

Does that mean that the operator will no longer do the same thing for
no additional charge, like (s)he used to?  AT&T seems to be developing
the same customer service attitude as the upstart IXCs, that is to
say, nonexistent.


Steve Brack, Consultant | sbrack@eng.utoledo.edu 
Toledo, OH  43613-1605  | sbrack@cse.utoledo.edu
MY OWN OPINIONS         | Tel: +1 419 534 7349 


[TELECOM Digest Editor's Note: I do not believe the AT&T operators would
ever devote up to thirty minutes repeatedly redialing a call. I've had
very courteous operators get the no circuits message and immediatly try
again; even possibly try again a third time, but then they tell you to
hang up and try again later. And that is assuming you go through the
operator -- at operator assisted rates -- rather than dialing direct.
This is not fifty years ago -- or even twenty years ago -- where the
international operators in White Plains, NY would 'book' the call and
call you back when they were able to get through, a half an hour or
two days later.  PAT] 

------------------------------

Date: Mon, 06 Mar 1995 10:12:34 -0500
From: charles@jyacc.jyacc.com (Charles McGuinness)
Subject: Re: PBS Rumors and Innuendo: Any Truth?


Let's see ... the Republicans are looking to axe public broadcasting
because either ...

(A)     NPR and PBS are filled with lefties who have consistently used
        government money to oppose the things Republicans want to do, 
and in
        doing so have built up a huge resevoir of ill-will among 
Republicans.



        or ..

(B)     It's an elaborate conspiracy (involving a mysterious Aussie,
        the new Speaker of the House, a large east coast telephone 
company,
        and a talking purple dinosaur) to give away valuable public
        resources.

Obviously, (A) isn't contrived enough to be believable.  But (B) still
doesn't explain cattle mutilations.  Hmmm, which to believe, which to
believe ...


Charles McGuinness | JAM Product Manager    | JYACC Inc.              
charles@jyacc.com  | +1 212 267 7722 x 3026 | 116 John St, NY NY 10038


[TELECOM Digest Editor's Note: Do you read the Sunday comics in the news-
paper? Yesterday they had a very clever one about a woman who takes her
car to the repair shop. She tells the mechanic that her car is not 
working
properly. 'No matter how she turns the steering wheel, the car seems to
keep gradually moving toward the left.'

The mechanic gets in the car to check it out and the car radio is seen
in the picture. He gets out and says, "I found the answer to your 
problem
lady ... you had your car radio tuned to the local NPR affiliate 
station."
Har har har!   PAT]

------------------------------

From: Sergei Anfilofiev <sanfi@zniis.msk.su>
Subject: Re: Re: E(TACS) and GSM
Date: 6 Mar 1995 18:24:16 +0300
Organization: ZNIIS
Reply-To: sanfi@zniis.msk.su


d92-sam@black29.nada.kth.se writes:

>> GSM is a French standard which is (roughly) translated as Group
>> Special Mobile or something similar. Someone else will know exactly.

> It started out as a European standard but has evolved into a world
> standard.  Groupe Spiciale Mobile was the name of the first task
> force, GSM later came to mean Global Standard for Mobile Telephone (or
> something).

Current meaning is Global System for Mobile Communications.

> GSM is up and running in *all* western european countries except for
> Spain.  Other European countries are Hungary and Russia.

Nowadays Russian operators support three standards: NMT-450, GSM,
AMPS (as a regional standard).

Some none-European countries running or opening shortly are:


Dr. Sergei Anfilofiev  | Tel:(7 095)368-9127       
Chief Internat. Depart.| Fax:(7 095)274-0067       
ZNIIS, Moscow, Russia  | E-mail: sanfi@zniis.msk.su

------------------------------

From: Finn.Stafsnes@nta.no (Finn Stafsnes)
Subject: Re: mu-law to a-law PCM
Organization: Norwegian Telecom Research
Date: Mon, 6 Mar 95 15:22:32 GMT


In article <telecom15.128.7@eecs.nwu.edu>, Testmark Laboratories
<0006718446@mcimail.com> writes:

> I need to check the acoustics of the handset of a European ISDN BRI
> phone.  Unfortunately, I only have a North American ISDN BRI
> simulator, which uses mu-law PCM, and the phone uses a-law PCM.  I
> know from prior experience that the two PCMs can be connected
> together, and the phone conversation still sounds "normal." 

Provided you have a mu to A converter in between you will only get e
few dB of degraded S/N ratio. If you feed a mu-encoded signal into an
A-law receiver (or thew other way) you _may_ get an intelligible
result (yes, I have tried), but the S/N ratio is probably well below
zero (I have not measured it).  Remember, in A-law encoding every
second bit is inverted.

I think you have two options: 

1) Disconnect the handset and measure it separately. 
2) Check if it is possible to strap the PCM codec to make it work in mu-
law
(many circuits can do both).

> can anyone tell me what the error would be in dB when I sweep from 300
> to 3400 Hz at a constant level, and do a loudness calculation? 

If the converter is there I think the levels will be rather close, but
without the converter the measurment will be usless.


Finn Stafsnes

------------------------------

From: rbs@cs.city.ac.uk (Robert Scott)
Subject: Re: AT&T Calling Card Mixup
Date: 06 Mar 1995 11:53:32 GMT
Organization: School of Informatics, City University, London
Reply-To: rbs@cs.city.ac.uk


TELECOM Digest Editor noted, regards subscriber entered in error in
the AT&T Military Saver plan:

> Or it went through and later a supervisor caught it. If you
> keep on getting marketing and promotional materials for the military
> plan *then* let us know, but I think you'll be okay. Honestly though,
> if it were me, I'd hope they did *not* discover the error. AT&T gives
> the soldiers a very good deal with absolutely rock-bottom pricing.  
PAT]

I don't think the case has been resolved. I got sent some promotional
literature about this military saver option. It costs $8.50 per month
and you get something like 20% discount on your calls.  BUT if you don't 
make any calls in a given month they credit the $8.50 back to your 
account 
the next month.  This debiting-crediting cycle has happened three times 
now 
so they haven't discovered the mistake.

It means that I'm always $8.50 out of pocket.  Also the crediting and
debiting are translated into UK$ using interantional exchange rates,
and as the credit rate is different from the debit rate (the banks
make a profit somewhere) then I get charged every time they do that
trick (even though the credits and debits are make on the same day).

I don't think the charges are particularly competitive with other
services.  There are services here that charge around 30c a minute to
the US whereas AT&T charge you $2.50 before you've said anything (or
something like that, I don't remember the exact terms).

Anyway, my question still stands.  Does AT&T Charge Card have an email
address or even a fax number?


Rob Scott

Dept of Comp Sci, City University, London, UK.
http://web.cs.city.ac.uk/homes/rbs/homepage.html


[TELECOM Digest Editor's Note: Well, I guess you have a valid complaint
alright. Apparently someone punched the wrong plan number in the 
computer
when you signed up. I don't know of any way to contact AT&T Customer
Service by email, but why don't you try calling them at 800-222-0300. 
You
will get representatives who, if they cannot help you, will transfer to
representatives (for the correct plan) who can.    PAT]

------------------------------

From: stans@panix.com (Stan Schwartz)
Subject: Re: New NPA in Colorado
Date: 5 Mar 1995 16:52:13 -0500
Organization: PANIX Public Access Internet and Unix, NYC


THE PILOT (PHRANTIC@UWYO.EDU) wrote:

> Does anyone have any information concerning the addition of a new NPA
> in Colorado?  Supposedly (from a USWest CSB guy) metro Denver will get
> the new area code in April of '96.

> Anyone able to confirm this and/or tell us what the new NPA might be?

Yes, it was announced in September that the 303 NPA was splitting, 
leaving 
303 for Denver and 970 for everywhere else that is not already 719.


Stan

------------------------------

From: mk@TFS.COM (Mike King)
Subject: Re: New NPA in Colorado
Date: Mon, 6 Mar 1995 09:48:56 PST


In TELECOM Digest V15 #128, THE PILOT <PHRANTIC@UWYO.EDU> asked:

> Does anyone have any information concerning the addition of a new NPA
> in Colorado?

According to the NANP Status Report from Bellcore (1/31/95), NPA 303
in CO will split to 970.  This is scheduled for April 2, 1995, and the
permissive period ends October 1, 1995.


Mike King    mk@tfs.com

------------------------------

Date: 05 Mar 95 22:06:31 PST
From: BRAY, DAVID C. <DCBR@chevron.com>
Subject: Re: New NPA in Colorado


Hi,

All I can say is this ... Denver is retaining the 303 area code for
now. Northwest Colorado is changing from 303 to 970 in *April, 1995*.
All of us have the burden of getting the stationary updated, not the
big city boys!


Cheers!   dcbr@chevron.com  (970) 675-3838 <-- New number after April.


[TELECOM Digest Editor's Note: Can you believe they had the nerve to
settle the 312/708/630 fiasco late last week by deciding that we in
the northern suburbs will have to have *our* area code changed to 630
later this year. Chicago will retain 312 exclusively; the politicians
and other hotshots would not hear otherwise. 708 will be almost directly 
straight west of Chicago in the western suburbs, with part of 708 in
the southwestern suburbs moved into 815 (which for the most part is
quite underused.) All we northerners have to move to 630. The few 
wireless
customers already resident on 630 -- there maybe all of 500-1000 
customers
there, and that is it, period -- will be moved to the proper geographic
code. So in other words, 630 will not be a wireless overlay, nor will
it be co-resident with 708 as originally proposed on a first come, first
served basis. Instead, 708 will be chopped in three parts. I wonder if
there have been any other splits where part of a 'new' area code' 
(i.e. 708 in recent years) was given to an 'old' (i.e. 815, around since
the beginning of area codes) rather than handed off to a newly created
one?

The cellular people gave Ameritech such a fuss about having all their
stuff parked in 630, that they originally decided on the co-resident
plan for 708 instead. Then when all the suburbanites made a stink about
having their next door neighbor in a different area code, the decision
was finally reached to do things in a more conventional manner. Forget
ever expecting 312 to be inconvenienced in any way; Mayor Daley would
never permit that.   PAT] 

------------------------------

Date: Mon, 6 Mar 1995 00:03:43 -0500
From: stanford@algorhythms.com
Subject: Re: 800 Directory Listings Wanted


> Is there any place to get the 800 directory listings and to whom the
> numbers belong?

The "Free Phone" CD ROM from ProCD (Danvers. MA. +1 (508) 750 0000)
contains the AT&T 800 directory searchable on any field including SIC
code.

------------------------------

From: fg8578@onr.com (Fred Goodwin)
Subject: Re: 800 Directory Listings Wanted
Date: 6 Mar 1995 07:23:12 GMT
Organization: Onramp Access, Inc.


In article <telecom15.128.8@eecs.nwu.edu>, jps0723@aol.com (JPS0723) 
says:

> Is there any place to get the 800 directory listings and to whom the
> numbers belong?

> [TELECOM Digest Editor's Note: I think you are referring to a criss-
> cross style directory for 800, and I do not think one has ever been
> published.    PAT]

I believe AT&T has a web page for 800 numbers.  It has several
options, one of which is to input an 800 number, then the AT&T form
returns the business that subscribes to the number.  I'm not sure if
AT&T's database includes all 800 numbers, or just their own.

Hope this helps.


Fred Goodwin    Southwestern Bell   Austin, TX

------------------------------

Date: Mon, 6 Mar 95 06:48:33 EST
From: Carl Moore <cmoore@ARL.MIL>
Subject: Re: 800 Directory Listings Wanted


Years ago, there was a "Toll Free Digest" published by someone in
Claverack, New York.


[TELECOM Digest Editor's Note: Yeah, that poor man -- if he is the 
person
I am thinking of -- used to spend all his time calling one 800 number
after another, rudely demanding of whoever answered the phone, "What 
company is this? What is this number used for?"  When he called me and
asked that, I told him it was a central repository for wrong numbers,
a place where callers unable to dial ten consecutive digits without
losing their train of thought called when they needed to release their
anxiety and tensions. I told him the telephone company provided it as
a public service to people who consistently dialed the wrong number.  
PAT]

------------------------------

Date: Mon, 6 Mar 1995 15:18:25 CST
From: Rick J. Dosky <rdosky@free.org>
Subject: Management Software Wanted


I am looking for any information available on Telecommunications 
Management Software. Including:

* Facilities Management
* Call Accounting
* Trouble/Service Ticket Management
* Fraud Detection
* Telephone Directory
* Invoice/Vendor Management

If any one has any information, please e-mail me at rdosky@free.org.


Rick J. Dosky    The Limited Stores

------------------------------

End of TELECOM Digest V15 #136
******************************

                                                                                    
