|
|
Message Digest
Volume 28 : Issue 169 : "text" Format
Messages in this Issue:
Re: 5XB arcana
Re: 5XB arcana
Re: 5XB arcana
Re: Pulse dialing overhead, was: ANI vs. Caller ID
Re: Pulse dialing overhead, was: ANI vs. Caller ID
Re: Touch Tone Charges - Bell Canada Still Charges Extra $2.80 a month
Re: Touch Tone Charges - Bell Canada Still Charges Extra $2.80 a month
Re: Touch Tone Charges - Bell Canada Still Charges Extra $2.80 a month
Re: Pulse dialing overhead, was: ANI vs. Caller ID
Re: Pulse dialing overhead, was: ANI vs. Caller ID
Re: Pulse dialing overhead, was: ANI vs. Caller ID
Re: Pulse dialing overhead, was: ANI vs. Caller ID
Re: Pulse dialing overhead, was: ANI vs. Caller ID
Re: 5XB arcana
Re: Usenet newsgroups
Re: Usenet newsgroups
Re: Touch Tone Charges - Bell Canada Still Charges Extra $2.80 a month
Re: Touch Tone Charges - Bell Canada Still Charges Extra $2.80 a month
====== 27 years of TELECOM Digest -- Founded August 21, 1981 ======
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, and other stuff of interest.
----------------------------------------------------------------------
Date: Sat, 20 Jun 2009 19:35:22 -0500
From: Michael Grigoni <michael.grigoni@cybertheque.org>
To: redacted@invalid.telecom.csail.mit.edu
Subject: Re: 5XB arcana
Message-ID: <4A3D804A.1070305@cybertheque.org>
Jim Haynes wrote:
> On 2009-06-19, hancock4@bbs.cpcn.com <hancock4@bbs.cpcn.com> wrote:
>
>>In the IBM history, there is mention of "wire spring relays" as being
>>a big improvement, and _possibly_ invented by IBM. I'm not sure what
>>they are and why they are superior. But apparently they allow
>>equipment to be smaller and work faster.
>
>
> The IBM and Western Electric wire spring relays were quite different
> from each other. Indeed the whole logic of relays was different
> between the two companies. IBM didn't have a relay contact open or
> close while carrying current - they had big contacts like automotive
> distributor breaker points that were activated by cams on shafts and
> did all the circuit making and breaking. The relays just steered the
> signals. What makes this possible is that in punched card machines
> everything is under control of the card position as it moves through
> the machine, hence is related to shaft rotation. In the telephone biz
> everything was asynchronous. Because they didn't make and break
> currents the relay contacts could be quite delicate in IBM equipment.
I suppose you mean that IBM wire spring relays weren't meant to handle
high currents ;) An example of an IBM machine built almost entirely
from wire spring relays (> 100 of them) is the Magnetic Tape Selectric
Typewriter. It is a word processing typewriter with editing features
(using two cartridge mag tapes) similar to those found on any word
processor. The logic was clocked in a number of ways and the relays
simply substituted for electronic logic elements; high current drive
to motor clutches and control relays was handled by a small number
of transistors.
The biggest problem with these relays is silver oxidation or perhaps
sulfation? I seem to remember a special solution for cleaning them
but also I am sure that I resorted to thiourea for convenience although
that probably accelerated subsequent tarnishing.
I had considered building a demonstration pulse-dial switch to handle
perhaps a dozen extensions using IBM wire spring relays instead of
special-purpose strowger-style SxS or crosspoint matrix relays simply
because I can get more of the IBM components than any other.
Michael
------------------------------
Date: Sat, 20 Jun 2009 18:38:27 -0700
From: Sam Spade <sam@coldmail.com>
To: redacted@invalid.telecom.csail.mit.edu
Subject: Re: 5XB arcana
Message-ID: <oag%l.1109$W_2.1043@newsfe02.iad>
David Lesher wrote:
> Thad Floryan <thad@thadlabs.com> writes:
>
>
>
>>Was your 5XB one of the old original flat-spring models? Perhaps you
>>also had an old SXS switch in the same building?
>
>
>
> I was told a story by a friend in an operating company
> about an early wire-spring 5XB. It was installed in Los
> Angeles. True to form, the floor was swept regularly,
> http://long-lines.net/documents/BSP-770-130-301/BSP-770-130-301-p1.html
> so as to keep things ship-shape.
>
> The switch died just a few months later. They found the LA smog was
> corroding the wire springs, which then fell off....and were swept away
> before anyone noticed....
>
> WECO ended up junking the switch, and Bell Labs learned a lot about
> corrosion in smog.
>
>
>
Urban Legend. Those C.O.s were air conditioned, which tended to reduce
the effects of smog.
General Telephone's vast army of SxS C.O.s were located in the most
concentrated areas of smog (Azusa, CA still holding the U.S. record for
smog in 1955). Those steppers just kept on steppn' throughout all that
horrible smog and heat.
------------------------------
Date: Sat, 20 Jun 2009 18:41:17 -0700
From: Sam Spade <sam@coldmail.com>
To: redacted@invalid.telecom.csail.mit.edu
Subject: Re: 5XB arcana
Message-ID: <2dg%l.1110$W_2.178@newsfe02.iad>
David Lesher wrote:
?
>
>
>
> I was told a story by a friend in an operating company
> about an early wire-spring 5XB. It was installed in Los
> Angeles. True to form, the floor was swept regularly,
> http://long-lines.net/documents/BSP-770-130-301/BSP-770-130-301-p1.html
> so as to keep things ship-shape.
>
Love the link, though. The U.S. military would hang their head in the
shame of failure when comparing their assinine documents with that one.
------------------------------
Date: Sat, 20 Jun 2009 20:36:07 EDT
From: Wesrock@aol.com
To: redacted@invalid.telecom.csail.mit.edu
Subject: Re: Pulse dialing overhead, was: ANI vs. Caller ID
Message-ID: <ceb.5c5044f5.376eda77@aol.com>
In a message dated 6/20/2009 2:34:08 AM Central Daylight Time,
xanadu.bbs@example.invalid writes:
> 5XB could RP, MF and DP, in and out
Was it euipped for RP in exchnages or dialing areas which never had any
Panel and likely no #1XB, such as Dallas, Fort Worth, Oklahoma City, Tulsa,
San Antonio and Houston?
Wes Leatherock
wesrock@aol.com
wleathus@yahoo.com
------------------------------
Date: Sun, 21 Jun 2009 08:54:26 -0700
From: Sam Spade <sam@coldmail.com>
To: redacted@invalid.telecom.csail.mit.edu
Subject: Re: Pulse dialing overhead, was: ANI vs. Caller ID
Message-ID: <TIs%l.30974$FI5.14763@newsfe12.iad>
Wesrock@aol.com wrote:
> In a message dated 6/20/2009 2:34:08 AM Central Daylight Time,
> xanadu.bbs@example.invalid writes:
>
>
>>5XB could RP, MF and DP, in and out
>
>
> Was it euipped for RP in exchnages or dialing areas which never had any
> Panel and likely no #1XB, such as Dallas, Fort Worth, Oklahoma City, Tulsa,
> San Antonio and Houston?
>
> Wes Leatherock
> wesrock@aol.com
> wleathus@yahoo.com
>
I recall visiting one of Pacific Telephone's early 1ESS (not 1AESS) in
El Monte, California. This office was contiguous with several GTE SXS
offices to the east and north, as well as Pacific telephone SXS offices
to the west and northwest. All of the primary trunking to these
associated offices was direct (did not go through tandems). The ESS
used overlap DP outpulsing; i.e., after the third digit was processed a
DP trunk to the appropriate sending office was seized and the receiving
office began processing the digits while the DP via the trunk was being
sent.
Was overlap interoffice DP used prior to stored program control?
------------------------------
Date: Sat, 20 Jun 2009 22:15:20 -0400
From: Curtis R Anderson <gleepy@gleepy.net>
To: redacted@invalid.telecom.csail.mit.edu
Subject: Re: Touch Tone Charges - Bell Canada Still Charges Extra $2.80 a month
Message-ID: <4A3D97B8.70409@gleepy.net>
David Lesher wrote:
> T <kd1s.nospam@cox.nospam.net> writes:
>
>>> It was a consequence of that extra-special pad design. It saved money by
>>> having only one of those expensive transistors.
>>>
>>> True, it had two tapped cup-core inductors, and was hand tuned; but we
>>> all know transistors are expensive!
>
>> Actually the single transistor was a brillian design, it acts as a
>> simple amplifier and then uses an LC tank to generate the frequencies,
>> hence the two cup core inductors.
>
> It was a brilliant design only when the transistor cost a few bucks, and
> the magnetics didn't.
>
> But a few years later it was 180 degrees around. But Ma/WECO kept making
> the same pad for about 20 years....
The old ITT Telecommunications / Cortelco 2554 I had had a tone pad with
a Mostek IC on board to generate the tones using a "colorful" 3.58 MHz
crystal, the same crystal used in NTSC color television sets for chroma
processing.
I can't remember the date code, but it seemed to be in the early '70s or so.
I presume some of the Independents felt it would be better to use one IC
than to have to tune coils in a tone-dial phone.
--
Curtis R. Anderson, Co-creator of "Gleepy the Hen", still
Email not munged, SpamAssassin [tm] in effect.
http://www.gleepy.net/ gleepy@intelligencia.com
gleepy@intelligencia.com (and others) Yahoo!: gleepythehen
------------------------------
Date: Sat, 20 Jun 2009 19:44:35 -0700 (PDT)
From: hancock4@bbs.cpcn.com
To: redacted@invalid.telecom.csail.mit.edu
Subject: Re: Touch Tone Charges - Bell Canada Still Charges Extra $2.80 a month
Message-ID: <23d3a2ce-b8b8-47d6-a135-e9f89636690d@h26g2000vbr.googlegroups.com>
On Jun 20, 2:50 am, David Lesher <wb8...@panix.com> wrote:
> But a few years later it was 180 degrees around. But Ma/WECO kept making
> the same pad for about 20 years....
I don't think the Western Electric 2500 set was in widespread
production that long. I'd guess production ceased around 1985 or
earlier due to divesture and newer competing sets on the market. I
don't think production started in earnest until roughly 1975 when
Touch Tone became more widely available and more people were willing
to pay for it.
Also we must remember a "new" WE phone out of the box may have been
reconditioned, especially toward the later years.
Lastly, internal designs changed. For example, Trimline and Princess
phones switched from incandescent dial lamps to LEDs. Perhaps later
model 2500s were upgraded, too.
In any event, as mentioned, the Western Electric sets were extremely
durable, rugged, and long lasting.
***** Moderator's Note *****
Toward the end of the production, WECO made 2500 sets with an IC
Touch-Tone generator. I don't know when they switched over.
Bill Horne
------------------------------
Date: Sat, 20 Jun 2009 20:49:05 -0700
From: Richard <rng@richbonnie.com>
To: redacted@invalid.telecom.csail.mit.edu
Subject: Re: Touch Tone Charges - Bell Canada Still Charges Extra $2.80 a month
Message-ID: <uvar355muth6neid27j49core7dv0vjlb7@4ax.com>
On Fri, 19 Jun 2009 19:06:19 -0400 (EDT), Sam Spade <sam@coldmail.com>
wrote:
>A recollection, perhaps an incorrect one: In the early days (Ernestine
>Days) of Touch-Tone, Ma Bell didn't want you to be able to send out
>tones once answer supervision was present. Does this click with anyone?
I ran into this "feature" back in 1998. I was at a payphone at the
garage at Hoover Dam on the Nevada-Arizona border. I tried to use an
800-number to connect to AT&T Long Distance: dial AT&T, enter my
account number, enter the number to which I wished to connect. But
this payphone cut off the touchtone pad after I dialed AT&T. I don't
know what company served Boulder, NV back then. Nearby Las Vegas was
run by Sprint.
------------------------------
Date: Sat, 20 Jun 2009 19:54:26 -0700 (PDT)
From: hancock4@bbs.cpcn.com
To: redacted@invalid.telecom.csail.mit.edu
Subject: Re: Pulse dialing overhead, was: ANI vs. Caller ID
Message-ID: <e82b406e-b7cb-435e-9629-6a7ac308a554@x6g2000vbg.googlegroups.com>
> ***** Moderator's Note *****
>
> The ILEC's didn't dump party lines: they simply withdrew the tariffs,
> and then offered the same service as "Ringmate". This is a win/win: it
> uses the equipment that would otherwise be idle, and gives parents a
> chance to have a separate number for the kids at minimal cost.
We had two-party service and we received a letter that it was being
discontinued statewide since it was not compatible with new
equipment. (Previously it grandfathered to existing customers). Our
line would be converted to a private line and the rate increased
accordingly. If our telephone set needed modification that was our
problem. There was no offer for any kind of new service. I
understand this went on in several states. (It was discussed here,
but no one seemed to know accurately the _current_ availability of
party service throughout the country or how many lines still existed.
New loop technology made them obsolete.)
> I doubt a switch owner would remove equipment once installed, including
> party line capabilities, but especially dial pulse: after all, there's
> no telling when someone with a 554 set on the wall of their bomb
> shelter will lock themselves in ...
As I understand it, party lines do require extra hardware to handle
the ringing sides, plus administrative headaches. Further, the cost
differential was no longer very significant and not many people had
it. It wasn't so much as getting rid of equipment as not getting new
gear on a new order. That is, an old No. 1 ESS supported it, but
perhaps the replacement No. 5 ESS did not.
------------------------------
Date: Sun, 21 Jun 2009 08:37:52 -0700 (PDT)
From: Mark Smith <marklsmith@yahoo.com>
To: redacted@invalid.telecom.csail.mit.edu
Subject: Re: Pulse dialing overhead, was: ANI vs. Caller ID
Message-ID: <564826.70902.qm@web65708.mail.ac4.yahoo.com>
________________________________
From: "hancock4@bbs.cpcn.com" <hancock4@bbs.cpcn.com>
To: redacted@invalid.telecom.csail.mit.edu
Sent: Saturday, June 20, 2009 10:54:26 PM
Subject: Re: [telecom] Pulse dialing overhead, was: ANI vs. Caller ID
>> ***** Moderator's Note *****
>>
>> The ILEC's didn't dump party lines: they simply withdrew the tariffs,
>> and then offered the same service as "Ringmate". This is a win/win: it
>> uses the equipment that would otherwise be idle, and gives parents a
>> chance to have a separate number for the kids at minimal cost.
>
> We had two-party service and we received a letter that it was being
> discontinued statewide since it was not compatible with new
> equipment. (Previously it grandfathered to existing customers). Our
> line would be converted to a private line and the rate increased
> accordingly. If our telephone set needed modification that was our
> problem. There was no offer for any kind of new service. I
> understand this went on in several states. (It was discussed here,
> but no one seemed to know accurately the _current_ availability of
> party service throughout the country or how many lines still existed.
> New loop technology made them obsolete.)
>
>
>
>
>> I doubt a switch owner would remove equipment once installed, including
>> party line capabilities, but especially dial pulse: after all, there's
>> no telling when someone with a 554 set on the wall of their bomb
>> shelter will lock themselves in ...
>
> As I understand it, party lines do require extra hardware to handle
> the ringing sides, plus administrative headaches. Further, the cost
> differential was no longer very significant and not many people had
> it. It wasn't so much as getting rid of equipment as not getting new
> gear on a new order. That is, an old No. 1 ESS supported it, but
> perhaps the replacement No. 5 ESS did not.
In Rhode Island, New England Bell did not have enough pairs to support
the boom in the 50s of suburbia. When my family moved in in 1950, we
had a two party line with a house two doors away. I think it used
reverse ring for the second phone. There was no ring code. When there
were enough pairs installed to provide private lines it was a low to
no cost switch. The telco didn't want party lines, it only provided
them because of necessity. Having a line was not a guarantee that you
could make a call, no dial tone problems were common during peak
demand times.
Mark L. Smith http://smith.freehosting.net
------------------------------
Date: Sun, 21 Jun 2009 13:20:55 -0400
From: T <kd1s.nospam@cox.nospam.net>
To: redacted@invalid.telecom.csail.mit.edu
Subject: Re: Pulse dialing overhead, was: ANI vs. Caller ID
Message-ID: <MPG.24a8360280366d93989a79@reader.motzarella.org>
In article <564826.70902.qm@web65708.mail.ac4.yahoo.com>,
marklsmith@yahoo.com says...
>
> ________________________________
> From: "hancock4@bbs.cpcn.com" <hancock4@bbs.cpcn.com>
> To: redacted@invalid.telecom.csail.mit.edu
> Sent: Saturday, June 20, 2009 10:54:26 PM
> Subject: Re: [telecom] Pulse dialing overhead, was: ANI vs. Caller ID
>
> >> ***** Moderator's Note *****
> >>
> >> The ILEC's didn't dump party lines: they simply withdrew the tariffs,
> >> and then offered the same service as "Ringmate". This is a win/win: it
> >> uses the equipment that would otherwise be idle, and gives parents a
> >> chance to have a separate number for the kids at minimal cost.
> >
> > We had two-party service and we received a letter that it was being
> > discontinued statewide since it was not compatible with new
> > equipment. (Previously it grandfathered to existing customers). Our
> > line would be converted to a private line and the rate increased
> > accordingly. If our telephone set needed modification that was our
> > problem. There was no offer for any kind of new service. I
> > understand this went on in several states. (It was discussed here,
> > but no one seemed to know accurately the _current_ availability of
> > party service throughout the country or how many lines still existed.
> > New loop technology made them obsolete.)
> >
> >
> >
> >
> >> I doubt a switch owner would remove equipment once installed, including
> >> party line capabilities, but especially dial pulse: after all, there's
> >> no telling when someone with a 554 set on the wall of their bomb
> >> shelter will lock themselves in ...
> >
> > As I understand it, party lines do require extra hardware to handle
> > the ringing sides, plus administrative headaches. Further, the cost
> > differential was no longer very significant and not many people had
> > it. It wasn't so much as getting rid of equipment as not getting new
> > gear on a new order. That is, an old No. 1 ESS supported it, but
> > perhaps the replacement No. 5 ESS did not.
>
> In Rhode Island, New England Bell did not have enough pairs to support
> the boom in the 50s of suburbia. When my family moved in in 1950, we
> had a two party line with a house two doors away. I think it used
> reverse ring for the second phone. There was no ring code. When there
> were enough pairs installed to provide private lines it was a low to
> no cost switch. The telco didn't want party lines, it only provided
> them because of necessity. Having a line was not a guarantee that you
> could make a call, no dial tone problems were common during peak
> demand times.
>
> Mark L. Smith http://smith.freehosting.net
That is very interesting. I suppose the burbs you're talking about are
in the western and southern parts of the state?
At long last bizarre toll boundaries are finally starting to evaporate
in RI. It's about time.
------------------------------
Date: Sat, 20 Jun 2009 19:55:52 -0700 (PDT)
From: hancock4@bbs.cpcn.com
To: redacted@invalid.telecom.csail.mit.edu
Subject: Re: Pulse dialing overhead, was: ANI vs. Caller ID
Message-ID: <cbd2e119-6acd-46e0-a775-d0466f0dfe94@r16g2000vbn.googlegroups.com>
On Jun 20, 3:31 am, "John F. Morse" <xanadu....@example.invalid>
wrote:
> > I also wonder which was retired last--No. 1 crossbar or Panel.
>
> 1XB outlasted Panel.
>
> 1XB also outlasted some 5XB switches. It was a heavy-hitter, while 5XB
> would lock up.
Thanks for the info. Would you know why the old Bell literature
seemed to wax poetic about No. 5 but mostly ignored No. 1? Were the
differences that significant?
------------------------------
Date: Sat, 20 Jun 2009 20:04:12 -0700 (PDT)
From: hancock4@bbs.cpcn.com
To: redacted@invalid.telecom.csail.mit.edu
Subject: Re: Pulse dialing overhead, was: ANI vs. Caller ID
Message-ID: <e650d426-83f8-4d0e-b05e-b531681035c3@g20g2000vba.googlegroups.com>
On Jun 20, 6:41 pm, bon...@host122.r-bonomi.com (Robert Bonomi) wrote:
> The point *IS* that 'few people use pulse dialing', [and] that it
> _does_ require a "disproportionate" amount of switch resources to
> handle pulse vs tone dialing, [and] that those resources _do_ cost
> money. Distributing that increased cost burden over the *small*
> number of people who 'may' use it *DOES* justify a 'surcharge' for
> that functionality.
So we're clear, what exactly are those "additional resources" you
claim are necessary _solely_ to support pulse dialing? As mentioned,
my source is the Bell Labs intro engineering/operations textbook.
What is yours?
What are the numbers of pulse calls, number of total calls, and what
is the dollar and cents cost of those "additional resources" to
support those pulse calls?
------------------------------
Date: Sat, 20 Jun 2009 23:04:12 -0500
From: "John F. Morse" <xanadu@example.invalid>
To: redacted@invalid.telecom.csail.mit.edu
Subject: Re: 5XB arcana
Message-ID: <a6e9d$4a3db13c$4aded8bf$25801@EVERESTKC.NET>
Wesrock@aol.com wrote:
> In a message dated 6/20/2009 2:10:35 AM Central Daylight Time,
> xanadu.bbs@example.invalid writes:
>
>
>> I visited the CEntral CO in Topeka, Kansas around 1970. That was a
>> huge Stroger SXS office, with the auxiliary line finders in wooden
>> cabinets with glass windows. I forget their actual name, but they
>> appeared to oscillate back and forth, left to right, with contacts
>> somehow stopping and held to terminals when a subscriber went ROH.
>>
>
> Are you sure that those weren't line switches instead of line finders?
> had some of those in in the office named "North," later "JAckson" in
> Oklahoma City, added to many times with W.E. SxS switches to
> accomodate growth. The line switches were part of the oroginal
> Strowger (A.E.?) switches installed when the office was built in 1920.
> They continued in service for the original A.E. part until the entire
> office was cutover to ESS in a new building built next to the original
> in the 1970s or 1980s, and renamed again, this time to "University."
>
>
> Wes Leatherock
> wesrock@aol.com
> wleathus@yahoo.com
>
Oh, I'm sure of nothing that far back (c. ~1969). ;-)
I was only visiting, and then only that one time. I might also have
mixed up the Topeka CO visit with a Lawrence CO visit. My brain is
slowly leaking off the memory charges. Perhaps this newsgroup will give
me a "refresh" treatment, and use some new cells? ;-)
Back in those days, all you needed to get through a guarded door was
your company ID. If you knew the door combination, you were in. COs were
full of visiting splicers, tagging on the MDF, so a strange face was
never challenged.
Your use of line "switches" does seem to bring back memories though. If
it was indeed Lawrence, I could have visited them as late as 1984. I
doubt if they still had SXS that late though.
Would you, by chance, have any links to Websites where they are
described, or maybe a picture? Or a longer description of their
technical operation, wiring, etc.?
TIA.
--
John
.
------------------------------
Date: Sat, 20 Jun 2009 23:59:55 -0500
From: John Mayson <john@mayson.us>
To: redacted@invalid.telecom.csail.mit.edu
Subject: Re: Usenet newsgroups
Message-ID: <6645152a0906202159o1845ce89x69ada3df506311e7@mail.gmail.com>
On Thu, Jun 18, 2009 at 1:41 AM, Thad Floryan <thad@thadlabs.com> wrote:
>
>
> Though I now use eternal-september.org (formerly Motzarella) for most NNTP
> purposes, Google Groups is useful for their archives. I recently located a
> series of articles circa 1992 in a comp.* group to answer a current question
> regarding hardware with which I was involved back then.
I do agree that Google Groups is a useful archive. What I don't
understand is how Google could create such a wonderful interface for
GMail and such a lousy one for Google Groups. I tried to make GG my
primary conduit for USENET, but it was just too frustrating to use.
Alpine and an NNTP server work far better, IMHO.
I know people who use GG are looked down upon across USENET. I'm not
sure how deserved this actually is.
>
> As I posted here a week ago, I use local system files which are identical on
> my Linux, UNIX, and Windows systems to access both Yahoo and Google Groups:
>
> http://thadlabs.com/PIX/home_page_display.jpg
This is an honest question and I'm not trolling. Why not just use
bookmarks? If you use multiple browsers you could easily use
something like Delicious.com. Just curious is all.
> The Google Groups "home" page showing my subscribed (only) Usenet newsgroups
> can be seen here:
>
> http://thadlabs.com/PIX/GG_home.jpg
We share some of the same groups.
> Their 28 years' Usenet archives makes Google Groups a useful resource; one of
> my articles in sci.math from 1988 can be seen here:
>
> http://groups.google.com/group/sci.math/msg/d6c891302914fd84 and here:
> http://groups.google.co.jp/group/sci.math/msg/d6c891302914fd84
I wish I had seen that one back then. I was in college and actually
derived the equations myself. I was proud of myself for doing it. I
too wanted it for radio purposes.
>
> 28 years (back to 1981) far exceeds most/all NNTP servers' retention and expiry
> policies.
You bet! I just hope Google maintains it.
John
--
John Mayson <john@mayson.us>
Austin, Texas, USA
------------------------------
Date: Sun, 21 Jun 2009 17:21:22 -0400
From: Steve Stone <n2ubp@hotmail.com>
To: redacted@invalid.telecom.csail.mit.edu
Subject: Re: Usenet newsgroups
Message-ID: <h1m8ba$drp$2@news.eternal-september.org>
John Mayson wrote:
> On Thu, Jun 18, 2009 at 1:41 AM, Thad Floryan <thad@thadlabs.com> wrote:
>
> I do agree that Google Groups is a useful archive.
Google "inherited" that archive when they bought out Deja News.
I can still search it and find posts I have made from a Fidonet link
from the late 1980's.
Steve
------------------------------
Date: Sun, 21 Jun 2009 09:29:08 -0700 (PDT)
From: Joseph Singer <joeofseattle@yahoo.com>
To: redacted@invalid.telecom.csail.mit.edu
Subject: Re: Touch Tone Charges - Bell Canada Still Charges Extra $2.80 a month
Message-ID: <715688.57753.qm@web52711.mail.re2.yahoo.com>
Tue, 16 Jun 2009 9:39:32 -0400 jwillis <jwillis.removethis@drlogick.com> wrote:
> Fast forward to 2009...
> Bell has grandfathered all rotary dial lines - if you dont move you
> dont have to pay the $2.80 a month for Touch-Tone, they put a filter
> on the line so that Touch-Tone will not dial out. If you move then
> Bell will start charging the $2.80 extra a month.>>
Bell deserves to have all their customers just leave Bell Canada and
get mobile service which includes touch-tone.
------------------------------
Date: Sun, 21 Jun 2009 13:10:34 -0400
From: T <kd1s.nospam@cox.nospam.net>
To: redacted@invalid.telecom.csail.mit.edu
Subject: Re: Touch Tone Charges - Bell Canada Still Charges Extra $2.80 a month
Message-ID: <MPG.24a83395f798e099989a78@reader.motzarella.org>
In article <h1hjnf$ogo$2@reader1.panix.com>, wb8foz@panix.com says...
>
> T <kd1s.nospam@cox.nospam.net> writes:
>
> >> It was a consequence of that extra-special pad design. It saved money by
> >> having only one of those expensive transistors.
> >>
> >> True, it had two tapped cup-core inductors, and was hand tuned; but we
> >> all know transistors are expensive!
>
> >Actually the single transistor was a brillian design, it acts as a
> >simple amplifier and then uses an LC tank to generate the frequencies,
> >hence the two cup core inductors.
>
> It was a brilliant design only when the transistor cost a few bucks, and
> the magnetics didn't.
>
> But a few years later it was 180 degrees around. But Ma/WECO kept making
> the same pad for about 20 years....
Because they were setup to do so. That is one thing about Bell, once
they'd perfected a manufacturing setup they stuck with it.
Of course now all the phones you buy today have their guts on printed
circuit (PC) boards. Bell's first brush at that in the consumer market
was the Trimline series. And of course their 1A2, Comkey 416, Merlin,
Partner and pay stations all got PC boards. That's because the new
boards are fairly reliable.
Remember when they potted all the network components?
------------------------------
TELECOM Digest is an electronic journal devoted mostly to telecom-
munications topics. It is circulated anywhere there is email, in
addition to Usenet, where it appears as the moderated newsgroup
'comp.dcom.telecom'.
TELECOM Digest is a not-for-profit, mostly non-commercial educational
service offered to the Internet by Patrick Townson. All the contents
of the Digest are compilation-copyrighted. You may reprint articles in
some other media on an occasional basis, but please attribute my work
and that of the original author.
The Telecom Digest is currently being moderated by Bill Horne while
Pat Townson recovers from a stroke.
Contact information: Bill Horne
Telecom Digest
43 Deerfield Road
Sharon MA 02067-2301
781-784-7287
bill at horne dot net
Subscribe: telecom-request@telecom-digest.org?body=subscribe telecom
Unsubscribe: telecom-request@telecom-digest.org?body=unsubscribe telecom
This Digest is the oldest continuing e-journal about telecomm-
unications on the Internet, having been founded in August, 1981 and
published continuously since then. Our archives are available for
your review/research. We believe we are the oldest e-zine/mailing list
on the internet in any category!
URL information: http://telecom-digest.org
Copyright (C) 2008 TELECOM Digest. All rights reserved.
Our attorney is Bill Levant, of Blue Bell, PA.
************************
---------------------------------------------------------------
Finally, the Digest is funded by gifts from generous readers such as
yourself who provide funding in amounts deemed appropriate. Your help
is important and appreciated. A suggested donation of fifty dollars
per year per reader is considered appropriate. See our address above.
Please make at least a single donation to cover the cost of processing
your name to the mailing list.
All opinions expressed herein are deemed to be those of the
author. Any organizations listed are for identification purposes only
and messages should not be considered any official expression by the
organization.
End of The Telecom digest (18 messages)
******************************
|
or 
