TELECOM Digest     Thu, 2 Mar 95 10:27:00 CST    Volume 15 : Issue 127

Inside This Issue:                           Editor: Patrick A. Townson

    Book Review: "Mobile IP Networking" by Malamud et al (Rob Slade)
    Credit Checking on Cellular Customers (Steve Samler)
    Tired of S.314 Hysteria (Brad Hicks)
    ESF and Clear Channel (was: What is ESF (Fred Bauer)
    X.25 over ISDN - Addressing (Azriel Heuman)
    References Wanted on Benefits of Networking (Alice Weng)
    Turnkey Telephone Based Classified System Required (Richard Burry)
    Help Information Needed (Deepak Bapna)
    CallerID and Dialogic Board (Brian Tatro)
    Call For Tender ISDN Project Support (Marcel W.J. van Ruijven)
    ATM UNI 3.0 & 3.1 (Lionel Jaquet)
    Value ($) of Teltone TLS3 Telephone Line Simulator? (Jim Aust)
    Voice Mail Prompts (Alexis Kasperavicius)
    Re: Non-Published Phone Number and Privacy Act (Tony Harminc)
    Re: Non-Published Phone Number and Privacy Act (hihosteveo@aol.com)

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

Date: Wed, 01 Mar 1995 16:46:57 EST
From: Rob Slade <roberts@mukluk.decus.ca>
Subject: Book Review: "Mobile IP Networking" by Malamud et al


CSMBIPNT.RVW   950113
 
"Mobile IP Networking", Malamud et al, 1993, 1-56592-994-2, U$9.95
%A   Carl Malamud 
%A   Phil Karn
%A   Jun Murai
%C   103 Morris Street, Suite A, Sebastopol, CA   95472
%D   1993
%G   1-56592-994-2
%I   O'Reilly & Associates/ORAudio
%O   U$9.95 800-998-9938 707-829-0515 fax: 707-829-0104 nuts@ora.com
%P   60 min.
%S   Geek of the Week
%T   "Mobile IP Networking"
 
These two Internet Talk Radio interviews were conducted in 1993.  Phil
Karn is the father of the KA9Q TCP/IP implementation, used for packet
radio and various DOS applications.  Jun Murai is founder of the
Japanese WIDE Internet.
 
The Karn interview talks a bit about KA9Q and mobile IP, but
concentrates on encryption and privacy.  Along the way, there is
discussion of Clipper key escrow, PGP and the hybrid methods of data
cryptography -- most, however related to mobile IP.
 
Jun Murai starts by describing the situation at Keio University where
all students have access to the network via a wired campus and
wireless connections to laptops.  VIP (Virtual Internet Protocol) and
mobil IP are used in conjunction.  He also speaks of the satellite
multicast system in Japan.

 
copyright Robert M. Slade, 1995   CSMBIPNT.RVW   950113. 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: Wed, 1 Mar 1995 19:45:43 EST
From: Steve Samler <steve@individual.com>
Subject: Credit Checking on Cellular Customers


I'm doing some research on credit check practices of cellular carriers
and their agents.

What is the common practice today when someone applies for cellular
service?  Credit check via one of the consumer credit agencies or via
D&B if a business is the applicant?

Is an additional credit check done if someone adds on a cellular modem?

Is anyone using the practice of approving to a certain dollar limit
and then cutting off service for the rest of the billing period if the
limit is reached?

How might today's practices be affected when cellular data (CDPD) is
in more widespread use and the typical monthly bill is higher than
today's?  (You might say that it won't matter because CDPD won't be
more widespread until the price is lower.  Then it might not matter.)

Any help is appreciated.


[TELECOM Digest Editor's Note: A credit check is done, and a deposit
equal to what the carrier estimates will be the charges for one or two
months is required if the subscriber's credit rating is not up to the
standards the carrier wants. I don't think it matters if you use a modem
or not.    PAT]

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

Date: Wed, 01 Mar 1995 15:08:19 -0600
From: /G=Brad/S=Hicks/OU1=0205465@mhs-mc.attmail.com
Subject: Tired of S.314 Hysteria


Am I the only person tired of being spammed about S.314, or just the
first one to complain about it?  Do I have to read seven to ten copies
of this in every newsgroup, even areas as obscure as 
alt.games.whitewolf?  
All this, on top of the maybe twenty or thirty copies I've gotten as
e-mail?
 
Can there possibly be anyone on the planet with an e-mail address who
=doesn't= know about S.314?
 
Now, that being said, I finally read one of the marked up copies of
the current law, showing the changes that S.314 would make.  And
having read them, I am convinced that every single analysis I have
read is either mistaken, exaggerated, or an outright lie.
 
It's right there in the text.  The section that everybody is scared
of, the one that makes telecommunications vendors responsible for any
obscenity or threats that swim in their bitstreams, is prefaced with
"Whosoever KNOWINGLY ...."  (Emphasis added.)
 
That's right.  They left in the word "knowingly."  Which means that if
somebody uses your BBS, or your email service, or your anonymous 
remailer 
to send someone an invitation to be the star in a pornographic snuff 
film, 
and you don't know about it, you're not in violation of the Exon bill.
 
The easily alarmed might worry that some court will say that you =could=
have known, and therefore =should= have known.  But that's not up to
prosecutors, that's up to juries.  When witnesses testify as to how many
kilobytes or megabytes flow through your system per night, no jury is
going to say that you should have read it all.  If you present evidence
that you couldn't have known, because those bits were all encrypted and
people didn't tell you what was in them, nobody's going to rule that you
=could= have known, let alone =should= have.
 
So.  What do the people who oppose S.314 =and who understand it= REALLY
want?  The only reason I see to oppose S.314 is if you =want= BBS sysops
and telephone sex vendors to be immune to obscenity and harrassment 
laws.
 
If you want it to be legal for people to use email, or web pages, or
improvised FidoNets or whatever to send around JPGs of perverts raping 6
year olds, or detailed descriptions of rape/murder/torture fantasies 
with
people's real names for the victims, or GIFs of people having sex
involving excrement, carving knives, and/or animals ... well, then say 
so!
 
Because if that's what you want, then I agree with you 100%.  As the 
late
great Justice Hugo Black said, "I am a plain and simple man. I believe
that when the Constitution says, 'no laws,' it MEANS 'no laws.'"  Of
course, there's no way that the American people will permit this.
However, that's not, in my opinion, a moral reason to lie about the
contents of a proposed law, and stir up a net.lynch.mob.
 
 
J. Brad Hicks     Internet: mc!Brad_Hicks@mhs.attmail.com
X.400: c=US admd=ATTMail prmd=MasterCard sn=Hicks gn=Brad
 

[TELECOM Digest Editor's Note: When I ran the pieces on S.314 a week or
more ago, I also had some second thoughts about whether or not I really
wanted (a) to run it -- because it had appeared so many other places; 
and
(b) because I was not really sure if I agreed with the claims of the
petition's circulators. Now I don't make my own agreement or 
disagreement
with something be the reason for publishing an item or not, so that
pretty well answered (b). But as you point out, it had been appearing
lots of places. The existence of the 'net.lynch.mob' in and of itself
was worth commenting on. 

The 'knew or should have known' is going to be the key to the whole 
thing
if S.314 passes. What that means of course is that AT&T, Sprint, MCI,
Compuserve, AOL and the others with big name attornies who know how to
properly suck up will be left alone while Joe Blow's BBS will be hounded
and put out of business, because he cannot afford to fight the 
government
and wouldn't know how to begin fighting anyway. It won't *really* have 
anything to do with what you knew, did not know or should have known. It
will have everything to do with your status and where you are relative
to your position near the bottom or top of the barrel we all spend all
our lives trying to crawl out of. I suppose that if you run an anonymous
remail service one could make the claim that, 'well, you really should
have had a good idea what your client base was using you for ...' 
Likewise
I imagine if you operate a site which seems to have an awful lot of
'incidents' in which users get their knuckles rapped from time to time
over the content of their messages one could make the claim also that
your traffic is not that great that the smut could repeatedly get past
you undetected, in which case you 'knew or should have known', etc.

And as you point out, the decision on who knew or should have known what
is a decision made by a judge or jury, not a prosecutor. But that is all
a very moot point: who has the *time and resources* to fight, whether
you win or lose?  I quite agree with you that the people putting out the
anti-S.314 material might have shown a wee bit more intellectual honesty
about what I suspect was the real intentions of many: as you pointed 
out,
to make the hard core smut peddlers completely prosecution- and judgment-
proof. Tom Lehrer, the Harvard mathemetician and comedian commented in 
one of his routines that people who like smut never actually come out 
and
say so. They always couch their objections to laws against it in terms
of the First Amendment. They prefer to speak theoretically about 
(perhaps)
far-fetched conclusions which will result. How refreshing it would be
to have someone simply say, "I love pictures of little boys doing the
no-no thing, and I don't want laws forbidding me to possess or share the
pictures with others." Now that would be a change, to forget the First
Amendement b.s. and say where you are actually coming from. But as you
point out, the public would never allow that; on the other hand, there
are still sufficient numbers of people who (like myself) will support
the First Amendment, at least when it suits them, so these discussions
always wind up going in that direction. And thank you for your honesty,
I might add.   PAT] 

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

Date: Wed, 1 Mar 95 10:50 EST
From: Fred Bauer <FBAUER+aROCKVILLE%Rockville@mcimail.com>
Subject: ESF and Clear Channel (was: What is ESF)


In <Telecom Digest Vol 15 # 125> mjenning@ix.netcom.com (Michael
Jennings) writes in part:

> In addition, ESF typically is associated with "clear channel
> capability" or, the ability for the user to take advantage of
> the full 64 kb/s data rate of any of the 24 channels on the T1
> line.

> Typically the "D4" type of framing requires that there be a
> minimum number of logical "1's" being transmitted over the T1
> line.

I know this has been covered before, and it's even alluded to in the
rest of the original message, but I think that it is important enough
to be stated very seperatly:

**** There is (almost, see below) NO RELATION between the framing
on a T1 and the ability to transmit clear channel data *****

When specifing a T1 Facility, there are two seperate, INDEPENDENT
parameters that are in volved.

The first is the LINE CODE, which specifies how the bits are encoded
onto the copper line.  This can be either AMI, or B8ZS.  If the line
code is AMI, then there is a requirement that there be at least 12.5%
Ones in the data, and there be no more than 15 consecutive Zeros.
Although you can run individual 64k channels on an AMI T1 (if the
adjacent channels are unused) it is typically only used for voice and
Nx56k data.  If the line code is B8ZS, then there is no "Ones Density"
requirement, and "clear channel" Data can be passed.  Some equipment
also supports a "line code" refered to as "BIT-7".  This scheme uses
AMI, but sets bit 7 to a one if an all zero byte comes through on any
channel.  (This is not reversed at the other end of the link, so this
scheme is very unfriendly to most data).

The second parameter is FRAMING.  This can be either D4 (Also refered
to as SF) or ESF.  In some cases, an UNFRAMED T1 may also be
specified.  The framing is what is what allows the T1 to be broken
down into 24 64k channels (DS0's), but has no bearing on what data can
be put into the channels.  As mentioned in another article in the same
issue of the Digest, ESF provides many benefits over D4, and should
probably be selected if your equipment supports it.

The one time there is a relation between frmaing and line code/ones
density is in the case of ZBTSI.  This coding scheme operates on an
AMI/ESF line (using some of the spare bits of the ESF framing) to
allow for clear-channel transmissions on an AMI facility.  This scheme
is used when older transmission systems are in place (which will only
support AMI) to provide clear channel capabilities.

I hope this clarifies the (non) relation between framing and clear
channel capabilities.


Fred Bauer                fbauer@access.digex.net
Principal Engineer        voice: +1.301.212.7067
LDDS/IDB Worldcom         fax:   +1.301.212.7055

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

From: Azriel Heuman <azi@mofet.elex.co.il>
Subject: X.25 Over ISDN - Addressing
Date: Thu, 2 Mar 1995 16:35:23 GMT
Organization: Telrad Ltd.


The ITU standards allow X.25 data calls over ISDN (both D and B
channels) to use ISDN phone numbers (E.164) instead of X.25 addresses
(X.121) even when the traffic transverses non-ISDN X.25 networks.  Do
any X.25 networks support this yet?  Can someone from Sprint (Telenet)
or other X.25 network providers shed some light on this subject?

Please respond by E-mail!


Best Regards, 

Azriel Heuman   azi@mofet.elex.co.il

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

From: aweng@magnus.acs.ohio-state.edu (Alice Weng)
Subject: References For Benefits of Networking
Date: 1 Mar 1995 12:38:41 GMT
Organization: The Ohio State University


I was wondering if anyone can help me.  I am currently working on a
grant proposal for the federal government.  What we are proposing is a
project that will network a number of programs for teenagers.  We plan
to have an on-line bulletin board system etc.  However, I need some
references as to the benefits of networking.  For example, that it
increases the number of resources assessable etc.  These references
cannot be too technical, it is not a technology grant.  They need to
be readible for the average graduate student in the social sciences
(me).  If you have no specific references, any suggestions of "subject
words" to enter into a literature search?  The ones that I know
"telecommunication" and "networking" bring up over 500 listings.  So I
need something more specific.  Any help is greatly appreciated!!!


Alice Weng
aweng@magnus.acs.ohio-state.edu

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

Date: Wed, 01 Mar 1995 09:39:18 -0500
From: Richard Burry <RBURRY@cuc.ca>
Subject: Turnkey Telephone Based Classified System Required


Hi folks. I'm looking into the requirements and cost of setting up a
telephone based classified service. Features would include talking
classifieds, messaging, and conferencing.  I am specifically looking
for a turnkey system that includes all the necessary hardware and
software.  Any information can be forwarded directly to my email
address. If you are interested in this area, forward your name and I
will be happy to compile all information received and pass it on to
you.

Thanks for you help.




Richard Burry
Director IS, CUC Broadcasting
Suite 1300, 300 Consilium Place
Scarborough, Ontario, Canada  M1H 3G2 
Voice 416-296-9966   Fax 416-296-7374   Email RBURRY@CUC.CA

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

From: Deepak Bapna <deepak+@CS.cmu.edu>
Subject: Information Needed on Phased Array Communications
Date: 01 Mar 1995 20:00:59 GMT
Organization: Carnegie Mellon University


Hi,

I am looking for information on phased array communcations system. 

Let me first give an overview of the project we are working on.

Overview: Lunar Rover Initiative

 In 1998, Carnegie Mellon University intends to land a pair of rovers
on the Moon.  The mission objectives are three-fold:

 1) To demonstrate that educational institutions, with private
corporate backing, can conduct useful space missions beyond Earth
orbit;

 2) To demonstrate that teleoperated rovers can work on the
Moon for long periods of time (up to two years);

 3) To return from the Moon a rich live video feed which can be
used by the private sector, by lunar researchers, and by educational
interests.

 A rich video feed is essential for this mission, since most of
the science objectives are observatory in nature.

                            ===================
 
We need to transmit about 6 Mbit/sec continuously while the robots are
travelling on moon. This makes mechanical pointing of the antenna
(located on the robot) difficult and hence we are looking for
electronic beam steering (and hence phased arrays).

Any information about phased array systems (companies/contact names,
phone number, existing systems for satellite applications, pointers to
recent developments in technology, papers, conferences etc.) would be
much appreciated.

Since, I am not a regular reader of the netnews, please send me a mail
(or give a call if your deals with phased arrays).


Thanks a lot,

Deepak Bapna
Field Robotics Center
Carnegie Mellon University
Pittsburgh, PA 15213
Phone: (412) 268-7414
email: deepak@ri.cmu.edu

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

From: btatro@iquest.com (Tatro Enterprises)
Subject: CallerID and Dialogic Board
Date: 01 Mar 1995 20:27:43 GMT
Organization: interQuest: Fuel for the Mind


Hi all,

I hope somebody here can point me in the right direction. I have a
Dialogic 21D board with two lines, one for fax use and one for
voicemail use.  Would like to be able to have CallerID function with
the voicemail system. Using Visual Voice development software bye
Stylus Innovation.  Qustion is, what is the fastest and cheapest way
of having the CallerID information passed to the voicemail application. 
Can a modem be used to intercept the information and pass it on?

Any information appreciated.


Brian

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

From: m.w.j.vanruijven@telecom.ptt.nl (Marcel W.J. van Ruijven)
Subject: Call For Tender ISDN Project Support
Date: Wed, 01 Mar 95 17:38:33 PST
Organization: PTT Telecom Netherlands
Reply-To: m.w.j.vanruijven@telecom.ptt.nl


 From November 28-30, 1995 the ISDN event of the year will take place:
Global 1995. It will be a world-wide event with show cases in
different countries linked together via ISDN.  Already 35 sponsors in
Europe, Asia, Africa and America support the initative and now seek
global support for a professional organisation. Three tenders are made
available by the Gloabl '95 steering committee:

- For administration
- For promotion and communication
- for project management

For more information please ask for details via:

Fax : +31 70 3816581 (Attn. Mr. A. Naftali) 
Internet: m.w.j.vanruijven@telecom.ptt.nl

Requests for information should be in before March 7, 1995.  Proposals
should be in no later than March 10, 1995


Marcel W.J. van Ruijven   PTT Telecom BV                     
E-mail:M.W.J.vanRuijven@telecom.ptt.nl
P.O. Box 30150  NL-2500 GD The Hague   The Netherlands 
                             
------------------------------

From: Lionel JAQUET <ljaquet@mail.mcnet.ch>
Subject: ATM UNI 3.0 & 3.1
Date: 02 Mar 1995 12:01:48 GMT
Organization: MCNET InterNetNews site


Hi,

I'm searching for the ATM UNI 3.0 & 3.1 papers. I'm interested for
LAN Emulation, ATM Virtual Routing and Q.2931, too.  Does anybody know
where on the net I can read and copy this information?


In advance, thanks.

Lionel.Jaquet@com.mcnet.ch

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

From: jimaust254@aol.com (JimAust254)
Subject: Value ($) of Teltone TLS3 Telephone Line Simulator?
Date: 01 Mar 1995 14:17:34 -0500
Organization: America Online, Inc. (1-800-827-6364)
Reply-To: jimaust254@aol.com (JimAust254)


I have a Teltone model TLS3 Telephone Line Simulator about two years old
and I paid $450 for it. What's it worth today??


Jim Austin  JimAust254.AOL.COM

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

From: alexis@news.cinenet.net (Alexis Kasperavicius)
Subject: Voice Mail Prompts
Date: 01 Mar 1995 20:50:31 -0800
Organization: Cinenet Communications,Internet Access,Los Angeles;310-301-
4500


I have spoken with the lady who is the "voice" of AT&T - she says
"Thank You for using AT&T" -- "We're sorry..." -- A famous voice and a
really nice lady.  I am going to be recording her in a digital studio
for a voice mail project in about one month and doing all the basic
prompts required for a voice mail system as well as all basic
intercept announcements.

My thought is, since there are SO MANY bad prompt sets out there, to
do a decent, clean prompt set that covers voice mail, basic IVR
applications, Bank-by-phone, Credit Card Debiting, intercepts,
CLASS,and coin announcements.  All numbers, dates, etc -- recorded in
a STUDIO, digitally -- not with a handset microphone in a noisy
equipment room. All edited cleanly and available on a CD-ROM in
digital format.

I am a sound editor in Hollywood and do a lot of video games so I have
access to a CD Writer and digital editing equipment.  This will be
done correctly.  However, I would like some input. If any of you have
done a voice mail or IVR prompt set, send me the script.  I'd like to
cover as many prompts as I can.

I would also like to come up with a standard file name format for a
standard set of prompts so we don't have the mishmash of filenames
that currently exist.  If you know of an existing "standard" file name
format please let me know.

I know that in C.O.'s there are huge drum tape machines that play the
intercept announcements.  What do you C.O. guys use to get recordings
onto these things?

For IVR guys, what digital file format do you use? I would probably
put the files on the CD in 44khz 16bit Mono .aiff and include a utilty
to convert to .wav, and Dialogic formats in whatever sampling rate you
wish.What other formats should be included?
 
Should the CD be playable as a CD?  What do you want?

I will also include all Telco progress tones, DTMF signals, MF
signals,all foreign ring signals.  All clean, all perfect.

I think this would be a valuable tool for anyone in the IVR industry
or anyone wanting to play around.  I'm doing this because I
occasionaly build IVR systems and would really like to have a set like
this.  I have the equipment and know the best voice in the country.
Also, I think it will be fun.  The CD would be sold for a reasonable
flat flee with no additional license fee required.  I will, of course,
send one to anyone who helps out. So ... dig around.  Find those
scripts!  THINK about it.  This thing will save you countless hours of
frustration if it's done correctly. And your customers will LOVE it!

I did a set with her and replaced just the prompt set on a voice
mailsystem -- nothing else -- the complaints dissapeared.  I actually
had people ask me what I had done to make the voice mail system "so
easy to use." If you still don't know the voice I'm talking about -
pick up your phone and dial 10288 - 0700 - 881-4812.  (Just listen to
the prompt voice - the thing is forwarded to a non-existent number in
Lithuania.)

Responses, anyone?


Alexis Kasperavicius    alexis@hollywood.cinenet.net

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

Date: Wed, 01 Mar 95 22:07:31 EST
From: Tony Harminc <EL406045@BROWNVM.brown.edu>
Subject: Re: Non-Published Phone Number and Privacy Act


rhiggins@carroll1.cc.edu (Ron Higgins) wrote:

> Our local telephone company is planning a 900% (900 percent) increase
> in the rate that it charges for a non-published, non-listed telephone
> number on a monthly basis.  And that is on top of the "*67" that I
> have to dial to stop my number from being transmitted by Caller ID.

A handy way around ever increasing unlisted number charges is to get a
distinctive ringing (or whatever your local telco calls it -- Identa
Ring, Identa Call, Teenagers' Line...) number on your existing line.
Many telcos will not publish (or make available via DA) the second or
third numbers - in fact you may have to pay them if you do want a
listing.  Let them list the 'main' number, treat the second number as
your real one, and ignore calls to the main one.  You can get a ring
detect box if you expect lots of calls on the main number that you
don't want to even ring your bell.

In many areas that second number costs much less than unpublished
service.


Tony Harminc

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

From: hihosteveo@aol.com (HiHoSteveo)
Subject: Re: Non-Published Phone Number and Privacy Act
Date: 2 Mar 1995 00:20:32 -0500
Organization: America Online, Inc. (1-800-827-6364)
Reply-To: hihosteveo@aol.com (HiHoSteveo)


PAT is correct -- what privacy act? This is not a privacy issue, but
an administrative issue by LEC tariff. Sorry about that.

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

End of TELECOM Digest V15 #127
******************************

         
