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TELECOM Digest     Tue, 22 Mar 2005 14:53:00 EST    Volume 24 : Issue 126

Inside This Issue:                             Editor: Patrick A. Townson

    Website Rouses Informants' Fear, Investigators' Ire (Monty Solomon)
    Is it Net Assistance ... or Cyberstalking? (Monty Solomon)
    Let's Focus on the Theft, Not the Identity (Monty Solomon)
    iPod-Like Cellphone Music Still Evolving (Monty Solomon)
    Some Concerned About Privacy Implications of E-ZPass (Monty Solomon)
    Source: FCC to Dress 'Naked' DSL (Jack Decker)
    Vonage Says Its Calls Are Still Being Blocked (Jack Decker)
    Level 3 Withdraws Request for VoIP Fee Ruling (Jack Decker)
    Who's the Owner of the Dim-and-Burst Signaling? (Hilbert)
    New Long Range Cordless Phones? (Dave)
    Re: What Happened To Channel 1 (Robert Bonomi)
    Re: What Happened to FM Channels 1-199? (Garrett Wollman)
    Re: What Happened To Channel 1 (Paul Coxwell)
    Re: Walkie Talkie (Steve Watt)
    Re: Hackers Target U.S. Power Grid (Daniel J McDonald)
    Re: Feds: Criminals Luuuuv Those Open 802.11 Networks (Steve Sobol)
    Re: VoIP and Bell DSL: Is it Ready For Prime Time? (Lisa Hancock)
    Re: Cell Phone ATT (Lisa Hancock)

Telecom and VOIP (Voice over Internet Protocol) Digest for the
Internet.  All contents here are copyrighted by Patrick Townson and
the individual writers/correspondents. Articles may be used in other
journals or newsgroups, provided the writer's name and the Digest are
included in the fair use quote.  By using -any name or email address-
included herein for -any- reason other than responding to an article
herein, you agree to pay a hundred dollars to the recipients of the
email.

               ===========================

Addresses herein are not to be added to any mailing list, nor to be
sold or given away without explicit written consent.  Chain letters,
viruses, porn, spam, and miscellaneous junk are definitely unwelcome.

We must fight spam for the same reason we fight crime: not because we
are naive enough to believe that we will ever stamp it out, but because
we do not want the kind of world that results when no one stands
against crime.   Geoffrey Welsh

               ===========================

See the bottom of this issue for subscription and archive details
and the name of our lawyer; other stuff of interest.  

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

Date: Mon, 21 Mar 2005 21:27:08 -0500
From: Monty Solomon <monty@roscom.com>
Subject: Website Rouses Informants' Fear, Investigators' Ire


By Kathleen Burge, Globe Staff  |  March 21, 2005

When a team of police, federal agents, and a drug-sniffing dog burst
through the front door and scoured every corner of the house, the
woman and her boyfriend figured they knew who had turned them in. So
she struck back: In the shadowy realms of cyberspace, she publicly
identified the informant who she suspected had ratted on her
boyfriend, landing him in court on drug possession charges.

On a website launched seven months ago from the North Shore, the woman
posted a note saying her alleged informant, a 27-year-old man from the
Tewksbury area, was a 'narc' who made a practice of snitching on
others to minimize his own legal problems.

http://www.boston.com/news/local/massachusetts/articles/2005/03/21/website_rouses_informants_fear_investigators_ire/

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

Date: Mon, 21 Mar 2005 21:37:30 -0500
From: Monty Solomon <monty@roscom.com>
Subject: Is it Net Assistance ... or Cyberstalking?


By Associated Press  |  March 21, 2005

A Cambridge start-up is offering a service it says gives a measure of
control over the personal data the Internet disgorges, giving new
meaning to a practice commonly termed 'ego surfing' or 'Googling
yourself.'

The practice of typing your name into an Internet search engine and
seeing what pops up is now common, but the results can be
unpredictable. The Internet holds surprising amounts of personal
information, and some of it may be outdated, inaccurate, or
embarrassing.

ZoomInfo's computers have compiled individual Web profiles of 25
million people, summarizing what the Web publicly says about each
person. The service, launched today, allows Web surfers to search for
their profile, then change it for free.

http://www.boston.com/business/technology/articles/2005/03/21/is_it_net_assistance____or_cyberstalking/ 

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

Date: Mon, 21 Mar 2005 21:55:36 -0500
From: Monty Solomon <monty@roscom.com>
Subject: Let's Focus on the Theft, Not the Identity


By Hiawatha Bray  |  March 21, 2005

Identity theft is a nasty crime with a catchy name -- too catchy for
our own good. Identity theft, though important, isn't the root
problem, and focusing on it may distract us from real solutions.

And we need solutions badly. For a month or so, we've fretted over the
news that careless database companies had sold crooks a couple hundred
thousand Social Security numbers. Meanwhile, Boston College warns
about 120,000 graduates that a computer hacker may have gained access
to their personal information by raiding a computer that contained the
alumni database.

It's bad enough that crooks can steal our personal data, or even
purchase it. But it gets worse: They can often find the same stuff
with Google. At least they can if they're as smart as Latanya Sweeney,
an associate professor of computer science at Carnegie Mellon
University.

In a paper she will present this week in California, Sweeney describes
a program of hers that scans Google search results for files
containing names and Social Security numbers. In her test of the
software, Sweeney tracked down 140 job hunters who had posted resumes
on the Web. For some odd reason, they included their Social Security
numbers -- easy pickings.

Sweeney's motives are pure; she wrote another program to e-mail the
140 people and warn them of the threat. Nearly all cleaned up their
resumes. Sweeney has proposed a service called Internet Angel that
would automatically scour the Net and alert people if their Social
Security numbers are online.

http://www.boston.com/business/technology/articles/2005/03/21/lets_focus_on_the_theft_not_the_identity/

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

Date: Mon, 21 Mar 2005 22:01:39 -0500
From: Monty Solomon <monty@roscom.com>
Subject: iPod-Like Cellphone Music Still Evolving


Carriers' profits said to be a crucial issue

By Peter J. Howe, Globe Staff  |  March 21, 2005

With more than 8 million sold last year and a popular buzz to die for,
Apple Computer Inc.'s iPod has proven there's a big appetite for a
portable, battery-powered, Internet-connected digital device that
makes sound.

And that's drawing plenty of attention from the businesses behind
another kind of portable, battery-powered, Internet-connected digital
device that makes sound: cellphone companies.

The save-a-pocket logic of offering consumers iPod-like music
capability built into a wireless handset seems obvious. But industry
insiders warn that it could be a long wait for true iPod-rivaling
devices to hit the market -- unless they come with some clear way for
carriers like Cingular Wireless, Verizon Wireless, and Sprint PCS to
get a cut of the profits.

Sprint this month began offering a $280 Sanyo MM-5600 camera phone
with enough memory to store about one hour's worth of MP3-format
music. For another $75, Sprint subscribers can buy a 512-megabyte
memory disk for the phone that can store roughly 400 songs, a far cry
from the 5,000 that can be stored on the $300 iPod. Sprint customers
buying the Sanyo device get a cable to transfer songs from their
computer into the phone, which also comes with stereo earphones.

Sony Ericsson Mobile Communications is also rolling out a line of
music-playing cellphones this year that sport the Sony Walkman name,
which dates back to the original portable music players of the late
1970s.

But a more ambitious effort by phone maker Motorola Inc. has
apparently been slowed down. This month, Motorola was set to unveil at
a big industry trade show in Hanover, Germany, a phone that downloads
music from Apple's iTunes service. Trade reporters had been briefed on
the phone's capabilities just days before Motorola canceled the
announcement.

http://www.boston.com/business/personaltech/articles/2005/03/21/ipod_like_cellphone_music_still_evolving/ 

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

Date: Mon, 21 Mar 2005 22:06:56 -0500
From: Monty Solomon <monty@roscom.com>
Subject: Some Concerned About Privacy Implications of E-ZPass System


CONCORD, N.H. --The E-ZPass system that will soon make it easier to
pay tolls in New Hampshire will make it easier to track people's
movements, privacy advocates warn.

State officials say strict policies are in place to prevent that, and
stress that E-ZPass will be voluntary. They also say the system will
reduce traffic congestion and put off the need to expand the current
toll plazas.

http://www.boston.com/news/local/new_hampshire/articles/2005/03/21/some_concerned_about_privacy_implications_of_e_zpass_system/

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

From: Jack Decker <jack-yahoogroups@withheld on request>
Date: Mon, 21 Mar 2005 15:09:53 -0500
Subject: Source: FCC to Dress 'Naked' DSL
Reply-To: VoIPnews@yahoogroups.com


http://news.com.com/Source+FCC+to+dress+naked+DSL/2100-1037_3-5627726.html

By Ben Charny
Staff Writer, CNET News.com

U.S. regulators are expected to up-end state public utility rules that
force BellSouth to let customers buy its high-speed Internet service
without having to also sign up for its local phone offering.

As early as Monday, said a source familiar with the situation, the
Federal Communications Commission could suspend public utility
commission regulations in California, Florida, Georgia, Kentucky and
Louisiana that forced BellSouth to sell DSL, or digital subscriber
line, service separate from its local phone service. In the past, the
two services had been inextricably linked.
	
Such a decision would send a strong message to other state utility
commissions that might be considering similar rules, the source said.

The expected FCC decision would have a profound effect on the few
thousand people in the four states who now get "naked" DSL from
BellSouth. It would also affect the millions of homeowners who would
go with a separate DSL offering given the chance, insiders
believe. The possible precedent for the Bells -- BellSouth and the
nation's three other top phone and DSL providers -- could even affect
cable operators that sell broadband and telephony on fiber-optic
networks, services that are much faster than the Bells' DSL.

Full story at:
http://news.com.com/Source+FCC+to+dress+naked+DSL/2100-1037_3-5627726.html

How to Distribute VoIP Throughout a Home:
http://michigantelephone.mi.org/distribute.html

If you live in Michigan, subscribe to the MI-Telecom group:
http://groups.yahoo.com/group/MI-Telecom/

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

From: Jack Decker <jack-yahoogroups@withheld on request>
Date: Mon, 21 Mar 2005 18:30:32 -0500
Subject: Vonage Says its Calls are Still Being Blocked


http://news.zdnet.com/2100-1035_22-5628564.html

By Ben Charny, CNET News.com
Published on ZDNet News: March 21, 2005, 11:24 AM PT

Two broadband providers are causing problems for Vonage's Internet
phone traffic, a spokeswoman said Monday, suggesting that a recent
federal fine for blocking Vonage calls may not have had its intended
impact.

A cable operator and what Vonage spokeswoman Brooke Schulz would only
describe as a "wireless broadband provider" are the two alleged
culprits. The problems include Vonage calls not getting through and
Vonage home phone adapters not working, she said.

The complaints surface about three weeks after a Mebane, N.C.,
telecommunications provider, Madison River Communication, said it
would "refrain from blocking" voice over Internet Protocol calls and
pay a $15,000 fine to the government. Vonage, a VoIP provider, brought
Madison River to the Federal Communications Commission's attention,
and may do so with providers involved in these latest problems.

Full story at:
http://news.zdnet.com/2100-1035_22-5628564.html

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

From: Jack Decker <jack-yahoogroups@withheld on request>
Date: Tue, 22 Mar 2005 01:54:54 -0500
Subject: Level 3 Withdraws Request for VoIP Fee Ruling


http://news.com.com/Level+3+withdraws+request+for+VoIP+fee+ruling/2100-7352_3-5629045.html

By Declan McCullagh
Staff Writer, CNET News.com

One of the most important Internet telephony rulings of the year was
expected from federal regulators Tuesday, but now it won't happen.

In a surprise move, an Internet telephony company that had asked the
Federal Communications Commission for the ruling said late Monday that
it was withdrawing its request.

Level 3 Communications had been telling the FCC that the company
should be able to pay lower fees to local telephone companies to begin
or end voice calls on their networks. The decision from the FCC was
expected to have a far-reaching impact on the voice over Internet
Protocol, or VoIP, industry. If Level 3 had lost, the prices for some
VoIP calls could have jumped.

But because FCC Chairman Michael Powell had left last week, the timing
was no longer right for a ruling, Level 3 CEO James Crowe said in a
statement. "The appointment of new leadership only three business days
before the statutory deadline for ruling on the petition" made it
"inappropriate to ask the agency to resolve this important issue in
the timeframe required by law," Crowe said.

Full story at:
http://news.com.com/Level+3+withdraws+request+for+VoIP+fee+ruling/2100-7352_3-5629045.html

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

From: geunbsong@yahoo.com (Hilbert)
Subject: Who's the Owner of the Dim-and-Burst Signaling?
Date: 21 Mar 2005 16:20:39 -0800
Organization: http://groups.google.com


Hello,

I'm a graduate student in Korea.

Now  I'm wondering  who's  the owner  of  the dim-and-burst  signaling
method in IS-95?  Qualcomm or Motorola  or else?  Or could you give me
a good hint for finding the answer?

Thanks.

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

From: Dave <newsgroups@dave!!!christense!!n.o!!!r!!!g>
Subject: New Long Range Cordless Phones?
Date: Mon, 21 Mar 2005 18:46:17 -0900


I saw a link earlier for this on Slash Dot.  Its a cordless phone that
supposedly works 100km from the base station (under ideal conditions).

http://www.goodbyelongdistance.com/catalog/item/1441280/975984.htm

Other then the obvious potential for grief from the FCC, anyone else 
have any thoughts?

I'm living in a rural Alaskan town and traditional cell service is 
spotty to none, even with an old bag phone and roof antenna so I was 
thinking that this could be an interesting approach to local mobile 
phone service.

Thanks,

-Dave

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

From: bonomi@host122.r-bonomi.com (Robert Bonomi)
Subject: Re: What Happened To Channel 1
Date: Tue, 22 Mar 2005 04:30:18 -0000
Organization: Widgets, Inc.


In article <telecom24.124.8@telecom-digest.org>, Neal McLain
<nmclain@annsgarden.com> wrote:

> Michael D. Sullivan  <userid@camsul.example.invalid> wrote:

>> Television, on tho other hand, started out in two discontiguous
>> VHF bands, with somewhat variable spacing between channels and
>> a need for precise tuning, and tuning in on a single band by
>> twiddling an analog variable tuning capacitor to the right
>> frequency would have been difficult.  This tuning method was
>> used on some early TVs; I don't know  whether they were tuned
>> by numeric frequency or by channel number, but
>> it would not have been very convenient.  The TV industry
>> instead standardized on TV tuners that had 12 discrete fixed
>> settings, pre-tuned to channels 2-13, with a fine tuning
>> control that allowed one to tune  the frequency higher or lower
>> to account for offsets....

> Whereupon Robert Bonomi (bonomi@host122.r-bonomi.com) wrote:

>> Plausable,  just 'false to fact'.  <wry grin>

>> In the early days of TV receivers, they were equipped with
>> continuous-tuning knobs/dials, just like an AM radio receiver.
>> For the TV band, however the indicator assembly was marked by
>> "channel", *not* by frequency.

>> I used to have a 1930's Crosley TV that had that kind of
>> continuous tuner.  *BIG* gap on the dial, between channel 6 and
>> 7, It actually tuned across that entire 'midband' space -- with
>> all kinds of interesting results.  You could "see" aircraft
>> band transmissions, and hear stuff on broadcast FM, 2m Ham, and
>> business-band.

> Sullivan is correct.

His recitation of history is factual.

He is *NOT* accurate with regard to 'cause and effect' of 'detent'
tuners leading to "channel number" common-usage.  Detent tuners were
at least 'second generation'; the prior generation (analog
continuous-tune) sets all used _numbered_ channels,

Crosley, in those days, was a "high end" manufacturer.  If a
high-tech, 'detent' tuner design had been available, they *would* have
been using it.

Thus we've got numbered channels (_without_ frequency numbers) in
"common use" well before any 'detent' (turret switching, or other)
tuners were in vogue.

In the -very- early days stations _were_ identified by the frequency/
frequencies they transmitted on, There wasn't any option on the
matter, since it was being done under experimental provisions of
_amateur_radio_ licenses, and where they were broadcasting could
change from day to day. :) But this is WW-I era.

> As Sullivan acknowledged, some old TV sets did work like Bonomi's
> 1930s Crosley: they required "tuning in on a single band by twiddling
> an analog variable tuning capacitor to the right frequency [which]
> would have been difficult."

Actually it was surprisingly easy.  Not even as hard as tuning an AM
receiver. Or use the markings on the dial to get 'close', then you
ignore the markings and tweak for maximum clarity.  All it takes is
"reasonable" gearing. :)

Add in two-stage gearing -- the first few revolutions in either
direction were moved the frequency in small increments, once the
'limit' in either direction was reached, things went much faster.
Thus, when you overshot a "little bit" on the first attempt, you had
"automatic" fine-tuning as you started going in the other direction.
Somewhat complex mechanically, but amazingly easy to _use_.

> But by the 1950s, TV set manufacturers were installing "turret tuners"
> to simplify VHF tuning.  A single knob rotated a cylindrical mechanism
> fitted with twelve little hand-wired circuit boards, one for each
> channel.  Each circuit board had a bunch of capacitors, some
> hand-wound coils, and a row of metal contacts that mated with metal
> springs.  As each circuit board was brought into position by the
> rotating mechanism, the springs mated with the contacts on the board,
> placing that board in the circuit.

> After the introduction of UHF, turret tuners were manufactured with 13
> circuit boards, one for each VHF channel + one that switched to a
> separate UHF tuner.  The UHF tuner was tuned in one continuous-tuning
> dial.

Yuppers.  'Practicality' strikes again.  70 UHF channels would have
meant a detent roughly every 5 degrees of rotation.  A 70-sided
turret, with circuit strips that were only 1/2" wide, would have had
to be nearly a _foot_ in diameter.  Gotta wait for a better
technology. :)

> Sullivan continued:

>> Later on, [turret] tuners had separate fine- tuners for each channel
>> so one wouldn't need to retune when switching from station to
>> station.

> On each channel, the fine-tuning control engaged a tuning slug inside
> one of the little hand-wound coils.

Sometimes a tuning slug in a coil, often a trimmer capacitor.
Either way, it provides a frequency adjustment over a limited range,
with relatively high precision and stability.

Sets with this kind of fine tuning could _almost_always_ be identified
by the fact you had to 'push in' the fine-tuning knob/ring to engage
the adjustment mechanism on the 'active" turret segment.

> Here's a link to a picture showing a turret VHF tuner (left) and
> what appears to be a continuous-tuning UHF tuner (right).  This
> particular photo happens to be on a British website, but the basic
> structure of the turret mechanism is the same in the USA.

> http://www.thevalvepage.com/valvetek/guidgrid/GGRID2.JPG

> Back in my cable TV days during the 70s, turret tuners used to drive
> us nuts.  There was only one VHF TV station in the market (Channel 3),
> so if a viewer wasn't hooked to cable, the only exercise the tuner got
> was from getting flipped back and forth between UHF and 3.  This kept
> the contacts on UHF, 2, and 3 clean, but the rest of the contacts got
> pretty dusty and/or corroded.  If this viewer then connected to cable
> (just 12 channels in those days), suddenly, all 12 VHF circuit boards
> were needed.  We spent a lot of time explaining, "I'm sorry, sir, your
> TV set's tuner needs to be cleaned ... please take it to the TV repair
> shop of your choice ... no we do not repair television sets ... our
> franchise agreement specifically prohibits it."

> Things got even worse when we introduced our first pay service (HBO)
> in 1978.  We "hid" it in the midband on cable channel 17, "in the
> clear" (not scrambled, not trapped).  We provided each HBO sub with
> a primitive converter: a little box with a single two-position
> switch:

>   - One position converted channel 17 to channel 2 for HBO.

>   - One position passed the incoming cable signal through
>     unaltered for channels 2-13.

> It wasn't very good security, but the powers-that-were considered it
> to be good enough, since turret tuners couldn't tune it.

> Well, it wasn't long before local TV shops discovered a new line of 
> business: retuning one of the lesser-used turret circuit boards (like 
> public access) to channel 17.
> Of course, Bonomi's old Crosley would have tuned to it. 

B&W only, a roughly 11" _round_ tube, medium-lousy contrast range,
moderately long-persistence phosphor, and a few other drawbacks --
hardly worth the trouble. :)

And, of course, no 75-ohm coax input.  Would have had to use a balun
on the twin-lead screw terminals.  ;)

*nice* audio, though.

> 1970s, virtually all TV sets used turret VHF tuners.  Varactor tuners
> with digital displays were just coming on the market, and the old
> continuous-tuning models had just about disappeared.

I don't think anybody selling into the U.S. market at the end of WW-II
was making a continuous-tuning model.  Turret tuners were
simpler/easier/ cheaper to manufacture, once you worked out the right
combinations of resonant frequencies and band-pass filters.

And *much* more "user-friendly".

> A few years later, we moved HBO to channel 2 (so we could sell HBO to
> hotels and motels), installed negative traps to secure it, .....

What science can take away, science can put back.  Those traps did _not_
*completely* eliminate the signal getting into the customer premises, they
just made it so weak that a conventional TV set couldn't amplify it enough
to make a decent picture.   A decent high-gain single-channel pre-amp, on
the other hand, installed 'in front of' the TV receiver, could do a 
surprisingly good job of resurrecting the 'killed' signal.  <grin>

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

From: wollman@lcs.mit.edu (Garrett Wollman)
Subject: Re: What Happened to FM Channels 1-199?
Date: Mon, 21 Mar 2005 23:21:21 UTC
Organization: MIT Laboratory for Computer Science


In article <telecom24.125.17@telecom-digest.org>,
<BobGoudreau@withheld at request> wrote:

> Now that we've covered the history of VHF Channel 1, can anyone
> explain why the official FM channel numbers are in the range 200-300
> instead of 1-101?

I believe it was simply to avoid confusion with the TV channels 2-83.

-GAWollman

-- 
Garrett A. Wollman    | As the Constitution endures, persons in every
wollman@csail.mit.edu | generation can invoke its principles in their own
Opinions not those    | search for greater freedom.
of MIT or CSAIL.      | - A. Kennedy, Lawrence v. Texas, 539 U.S. ___ (2003)

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

From: Paul Coxwell <paulcoxwell@tiscali.co.uk>
Subject: Re: What Happened To Channel 1
Date: Tue, 22 Mar 2005 10:50:02 -0000


Joe Morris <jcmorris@mitre.org> wrote:

> [*] I get a number of questions at the office when my wallpaper changer
> pops up with the original WDSU-TV test pattern.  It makes me feel old when
> I turn out to be the only person there who remembers when test patterns
> were routinely incorporated into the station ID slides ...

Any chance of a copy of that?  It would be interesting to see.

You can find many examples of old (and not-so-old) test patterns and
idents for British TV here:

http://www.meldrum.co.uk/mhp/


> [TELECOM Digest Editor's Note: I seem to recall when I was about five
> years old my parents had a television set with a tiny little screen
> which was maybe two or three inches round. And it had a _huge_
> magnifying glass attached to the front of it.  PAT]

I never saw it, but my father built a set in the late 1940s/early 1950s
using a VCR97 tube, which, if I recall correctly, was about 5 inches.

The VCR97 had been a very common CRT in radar sets and was available
cheaply as government surplus at the time.  Of course, the resulting
monochrome picture would have been green!

- Paul.

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

From: steve@Watt.COM (Steve Watt)
Subject: Re: Walkie Talkie
Date: Tue, 22 Mar 2005 00:28:58 UTC
Organization: Watt Consultants


In article <telecom24.103.8@telecom-digest.org>,
jason  <cheanglong@gmail.com> wrote:

> Hello all,

> I need to know more about walkie talkie and how the frequency range
> work.  Let'say a walkie talkie with frequency range work from 2400 to
> 2500 Mhz, while the IF is 5 Mhz.

> So how will the channels be allocated for transmitting and receiving
> if it is a single duplex type?

The IF doesn't have anything to do with the channel spacing at all;
many older handheld transceivers have IFs of 455KHz, and that has no
impact on the channel spacing.

In simplified terms, minimum channel spacing is determined by the
modulation bandwidth.  If you've got FDMA (i.e. normal AM, SSB or FM
modulation) then the channels are slightly more than the modulation
bandwidth apart.  So if you have a 3KHz modulation bandwidth, the
channel center frequencies would be 5KHz apart.

If your modulation scheme is based on spread-spectrum techniques, then
basically everything changes, and everyone shares the same frequency
band with separation of signals provided by receive correlation.

Now, to your other question of how the channels will be allocated?
That's only barely a technical issue.  The regulators in the
particular country you intend to operate that transmitter in have
regulations and band plans that say what can be transmitted where.
They usually specify bandwidths and center frequencies for FDMA, add
slot timing to TDMA, and specific spreading codes or classes of
spreading codes for CDMA.

So, in the US, the FCC controls channel spacing for duplexing, and I
don't remember (and don't have at hand) the spacing in that frequency
band in the US.  -- Steve Watt KD6GGD PP-ASEL-IA ICBM: 121W 56' 57.8"
/ 37N 20' 14.9" Internet: steve @ Watt.COM Whois: SW32 Free time?
There's no such thing.  It just comes in varying prices...

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

Subject: Re: Hackers Target U.S. Power Grid
From: djmcdona@fnord.io.com (Daniel J McDonald)
Date: Mon, 21 Mar 2005 19:35:58 -0600


In article <telecom24.114.13@telecom-digest.org>,
<hancock4@bbs.cpcn.com> wrote:

> Power grids existed long before networked-computers came out.  Why
> would the grid be so vulnerable now?

Because it is more efficient to control a grid froma central location,
rather than sending men out to substations to throw breakers.

> Shouldn't those critical networks be isolated from outside access
> altogether?

Information sharing can be gathered for non-control systems from the
intelligent devices at grid control points.  Meters are not only
useful for determining load and deciding when to switch to a different
circuit, but for billing as well.  information about voltage and
frequency support is used to demonstrate "more stability" and thus
gain a higher retail price, in addition to giving the control board
operators information on what they need to do to support the grid.

Also, the grid has become more complicated, with "distributed
generation".  With people looking for alternative sources of power,
there are many additional complexities.  For example, in my city,
Austin Texas, there are solar, fuel-cell, and small-package combined
chiller/generators distributed around the city that feed into the
grid, along with a couple of methane burners at the dumps.
Coordinating all of those small generators takes extensive
instrumentation that wasn't necessary 20 years ago, and wouldn't be
possible without networks.

> Secondly, they should be more worried about grid overloads from all the 
> power source shifting done today.  The grids were not designed to 
> handle that kind of loads and problems like the recent NYC-NE blackout 
> will occur again. 

Yup.  The real solution, assuming we can't upgrade the grid, is to
build more powerplants closer to the load (that is, closer to
population centers).  Of course, that is very popular and people are
overjoyed to welcome new jobs into their neighborhoods. ;-)

Daniel J McDonald CCIE # 2495, CNX
Visit my website: http://www.austinnetworkdesign.com

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

From: Steve Sobol <sjsobol@JustThe.net>
Subject: Re: Feds: Criminals Luuuuv Those Open 802.11 Networks
Date: Mon, 21 Mar 2005 21:56:27 -0800
Organization: Glorb Internet Services, http://www.glorb.com


Tim@Backhome.org wrote:

> It is so easy to secure WiFi, at least against most intruders.  I can
> receive four other home WiFi signals in my condo.  Like mine, all the
> others are secured.  So, I guess me and my neighbors are smarter than
> some of these dummies. ;-)

Are you using 802.11b or g? g, with WPA, is far better than WEP, due
to the way WPA handles encryption keys.


JustThe.net - Apple Valley, CA - http://JustThe.net/ - 888.480.4NET (4638)
Steven J. Sobol, Geek In Charge / sjsobol@JustThe.net / PGP: 0xE3AE35ED

"The wisdom of a fool won't set you free"
     --New Order, "Bizarre Love Triangle"

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

From: hancock4@bbs.cpcn.com
Subject: Re: VoIP and Bell DSL: Is it Ready For Prime Time?
Date: 22 Mar 2005 07:18:14 -0800
Organization: http://groups.google.com


> [TELECOM Digest Editor's Note: Well Lisa, what do you do in a case
> like Brooklyn, New York where by the dispatcher's own admission,
> "we do not answer this phone after 10 PM"?

I don't understand the context of your statement.  You mean they say
in NYC they don't answer 911 calls after 10PM?  I don't know the story,
but I suspect perhaps the call was routed to a business office instead
of an emergency line where such calls wouldn't be answered after hours.

> ... If a small town can arrange its police department to serve the
> public efficiently, without a lot of sass-back to the public they
> are expected to serve, then why can't your so-called county of
> 880,000?

That is a good question.  But we are speaking of two separate
issues:  (1) what exists now and how we consumers are best to deal
with it and (2) what we'd like to exist.

As to (1) -- what exists now: public safety dispatching has become
more centralized, covering a wider area and multiple jurisdictions.
This is in part due to making 911 service available in suburban areas.
The modern 911 services lock onto your line, provide your number, and
access a database showing your address and other information.  The
problem is that VOIP, being a "floating" kind of service, doesn't
necessarily input into these databases (does it charge for this as
regular phones do -- we pay a "911 surcharge" of $1/month?)

You seem to be upset than the existing 911 infrastructure doesn't
support newcomer VOIP.  As the newcomer, shouldn't VOIP have the
obligation to make itself support the existing infrastructure and pay
for the costs thereof?

For 2 -- in an ideal world each local town would have on duty a 24/7
dispatcher even though overnight they'd handle very few calls.  But
even this has limitations because the central dispatch knows where all
police/fire/rescue units are and their availability and in case of a
big problem, neighboring units are immediately dispatched.  There's no
need to relay phone calls from one jurisdiction to another.  We had an
unexpected bad flood and the response was quick and efficient.

There are always tradeoffs between local specialized service and
reginal mass-market service.  Each has pros and cons.

> Maybe you, or one of the other Bell System apologists in our
> readership can tell me why it is that VOIP carriers are expected to
> be the ones to have to do the twisting and turning and maneuvering
> to get their ways in line to make it easier for the public servants?

Because in the last two decades considerable infrastructure has been
invested in an E911 structure based on wireline service.  Suddenly
this new technology comes along and they want everyone to conform to
it.  Why can't the new technology confirm to the existing?  It's not
like E911 has been a secret.  The govt and telephone subscribers have
foot the bill for these enhancements.  Why should some newcomer get a
free ride?

The cable TV industry grew up by laying its own cable at its own
expense and building its own receiver buildings.  Then they upgraded
on their own replacing with coaxial with fibre-optic and now they're
free to do as they wish.  But if they wish to mix in with existing
networks, they have to conform to existing networks.  Part of that
conformity requirement is E911 service.

In other words, suppose we invent a cheap and easy to fly helicopter.
Now we're upset that supermarkets and housing developments don't have
landing platforms on their roofs to accomodate us.

> What the hell did any of those people do back in the 1960's when our
> nation was crossbar with no immediate ID on calls?

In big cities you dialed zero and the operator gave you the police
dept.  In rural areas it was rather cumbersome and took extra time.
Don't forget, not too long ago suburbanites had to know the specific
numbers for fire/police/rescue for their town.  In rural areas, these
changed years since you called the home of the police or fire chief
(and the phone books of rural areas said this).  Phone CO service
boundaries and town boundaries do not always mesh in suburban areas.

> You want a job as a police dispatcher? Then you, by-God, either get
> an encyclopedic knowledge of streets and intersections and addresses
> in your town or don't get in the way of the people who do; if your
> worker's "union" insists you have to have a job you are probably not
> qualified for anyway, is that the public or VOIP carriers at fault?
> PAT]

Having that "encyclopedic knowledge" of a wide suburban region is not
so easy.  Unlike a city with its grid streets, a suburban county has
much more land area and crazy patchwork developments with overlapping
names and towns and jurisdictions.

The police officials years back decided that computerized reference
would be superior.  If someone wasn't able to talk or a call got cut
off, they could still send help which they couldn't before.  They
supposedly can send help faster.  They supposedly have up-to-date
information about new construction or changed situations.

Again, like it or not, this is the present system, and it's up to the
VOIP carriers to make it work for them, not for the existing system to
assume costs to make it work for VOIP.

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

From: hancock4@bbs.cpcn.com
Subject: Re: Cell Phone ATT
Date: 22 Mar 2005 09:31:20 -0800
Organization: http://groups.google.com


absmith3@hotmail.com wrote:

> I have an ATT contract dated in Oct- 2004- before Cingular bought
> ATT. Now Cingular is saying that I owe it $170 for cancellation fee
> if I transfer service to Verizon.

As all the others mentioned, you are still liable to fulfill
the contract.

My question is:  why do you want to switch?  Were you dissatisfied
with AT&T service before the merger?  Has the merger caused your
service quality to deteriorate?

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


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