Date: Fri, 28 Sep 2018 18:51:11 -0400
From: Bill Horne <bill@horneQRM.net>
Subject: Mobile Websites Can Tap Into Your Phone's Sensors Without
By Lily Hay Newman
WHEN APPS WANTS to access data from your smartphone's motion or light
sensors, they often make that capability clear. That keeps a fitness
app, say, from counting your steps without your knowledge. But a team
of researchers has discovered that the rules don't apply to websites
loaded in mobile browsers, which can often often access an array of
device sensors without any notifications or permissions whatsoever.
(Remove QRM from my email address to write to me directly)
Date: 29 Sep 2018 13:42:48 -0400
From: "Monty Solomon" <firstname.lastname@example.org>
Subject: Facebook wins court battle over law enforcement access to
encrypted phone calls
Facebook wins court battle over law enforcement access to encrypted
The ruling is a setback to the Justice Department and a victory for
Date: 29 Sep 2018 11:57:56 -0400
From: "Fred Goldstein" <email@example.com>
Subject: Re: Finger Pointing
On 9/27/2018 4:40 PM, HAncock4 wrote:
> On Wednesday, September 26, 2018 at 3:32:02 PM UTC-4, Bill Horne wrote:
>> For those of a certain age, "COAM" means "Customer Owned And
>> Maintained." Where I worked, the designation was mostly applied to
>> owners of COCOT (Customer Owned Coin Operated Telephone) pay phones,
>> and then to those who bought PBX (Private Branch eXchange) units from
>> a slew of fly-by-night vendors who cropped up after divestiture to
>> take advantage of the Bell System reputation for reliability, by
>> peddling sub-standard technology at exorbitant prices.
> ITT took out a full page ad in LIFE in 1970 for their electronic
> PBX. (page 24)
> Here is another one from 1982 for Code A Phone.
> In 1975 the Bell System had the Dimension electronic PBX (two documents)
> Just out of curiosity, would anyone have heard of these units and if
> they were any good, like their ads tout?
I co-wrote a book about the new electronic PBXs in the late 1970s. It
is an area where Ma Bell was way, way behind the curve.
First off, bear in mind that this was years before divestiture.
Terminal equipment (CPE) was opened to competition by the 1968
Carterfone decision. In 1976 the FCC introduced Registration, to get
rid of the silly "protective coupling arrangements" COAM previously
needed. In 1980's Computer II decision, the FCC fully deregulated CPE,
effective 1983; all of the Bell CPE was moved to American Bell
Inc. This was before Divestiture, which then left AT&T with the CPE
(then called ATTIS) while the Bells kept the intraLATA networks.
During the 1970s, though, Ma Bell still kept its PBXs on tariff, rental
only; the competitors, called "interconnect companies", sold them. So
telecom managers (and I was one for a time) did a fiscal make/buy
analysis to convince the money folks which way to go.
The first few years of interconnect were unimpressive. My college needed
a PBX for its new campus, so ca. 1973 they bought an Oki 500 crossbar.
No worse than Bell's, but still electromechanical. Electronic PBXs were
about to hit, though, and most were digital. Harris Digital Telephone
Systems came out with one ca. 1974, using a primitive form of delta
modulation. Rolm entered the market ca. 1975 with its CBX. That used 144
kbps PCM, 12 bits linear @12 kHz, because it was cheaper to build those
filters than the ones needed for already-standard (on D3 channel banks)
64 kbps PCM.
> In my own humble opinion as a worker-bee, many of these systems were
> overloaded with unnecessary features that most ordinary users never
> bothered to learn, much less utilize.
> One office I was in had call-pickup. It was rarely used, and often
> caused confusion when it was used. Indeed, some users had the call
> pickup feature turned off.
> Distinctive ringing caused confusion and was not liked.
That would be true of Rolm, in some applications. By 1976, the Nortel
SL-1, using 64 kbps standard codecs, one per line, was out. It didn't
have many features on analog phones, but its proprietary SL-1 set did.
The SL-1 also introduced Remote Peripheral Equipment, a remote line
shelf connected by a pair of T1 lines. This was great for companies
with multiple sites around town, and was a good match for the new
digital microwave systems coming out. Prime Computer (anyone remember
them?) put in a bunch of microwave-linked RPE in the 1970s.
But Ma Bell was behind. It introduced Dimension, an *analog*
electronic switch. Its backplane had 64 (or 128 on the D2000) time
slots, and the voltage on each was the analog signal from one call. It
had a pretty long feature list, but they were lumped in different
Feature Packages, with different rental prices. D400 was the base
unit. D2000 was multiple buses with (analog) links between them. D100
was a compact package variant on the D400. It was controlled by a
proprietary minicomputer (D2000's being faster than D400's). It worked
okay but its main marketing push was "we're Ma Bell and you don't need
a capital request to install it." But they did have long-term
contracts, as long as 12 years (two-tier, then VTPP, rates).
I installed a Rolm LCBX at BBN ca. 1979. It had a ton of "star code"
features. The very technical crowd at BBN used them a lot. I later
installed a bunch of them at DEC. The station features saw much less
use there. In DEC's last years, it was mostly a Nortel shop. They had
a few multi-building SL-100s. Those were DMS-100 digital COs
configured as PBXs.
Ma Bell designed a digital version of Dimension, code-named Antelope,
in the late 1970s. But they kept it off market until 1983, when it was
off tariff, and it became System 85. This was their big PBX. The
smaller System 75 was a newer design. These had a long life span in
Fred R. Goldstein k1io fred "at" ionary.com
End of telecom Digest Mon, 01 Oct 2018