The Telecom Digest for August 04, 2010
Volume 29 : Issue 210 : "text" Format
Messages in this Issue:
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Date: Tue, 03 Aug 2010 04:02:27 -0800
From: John David Galt <jdg@diogenes.sacramento.ca.us>
To: telecomdigestmoderator.remove-this@and-this-too.telecom-digest.org.
Subject: Re: Do rate centers cross state lines?
Message-ID: <i38t25$ed7$1@blue.rahul.net>
David Kaye wrote:
> As to NPA/NXX spanning, there are rural areas where it's easier to service one
> state from another. I seem to remember a small area of northern California
> serviced from Oregon. I'm trying to find the actual communities but can't at
> the moment. I believe this is also true between California and Nevada.
I've found only one case: a "Verdi, CA" exchange in 530 is served by a switch in
Verdi, NV. There is no town of Verdi in CA; the nearest town in CA is Farad
(exit 201 on I-80). Most of the terrain in between is inaccessible mountains
(that stretch of I-80 runs along the narrow Truckee River canyon), so whoever is
on the "Verdi, CA" exchange must be awfully hard to get to.
Date: Tue, 3 Aug 2010 18:06:16 +0000 (UTC)
From: danny burstein <dannyb@panix.com>
To: telecomdigestmoderator.remove-this@and-this-too.telecom-digest.org.
Subject: Re: Do rate centers cross state lines?
Message-ID: <i39lqo$rff$1@reader1.panix.com>
In <i38t25$ed7$1@blue.rahul.net> John David Galt <jdg@diogenes.sacramento.ca.us> writes:
>David Kaye wrote:
>> As to NPA/NXX spanning, there are rural areas where it's easier to service one
>> state from another. I seem to remember a small area of northern California
>> serviced from Oregon. I'm trying to find the actual communities but can't at
>> the moment. I believe this is also true between California and Nevada.
>I've found only one case: a "Verdi, CA" exchange in 530 is served by a switch in
>Verdi, NV. There is no town of Verdi in CA; the nearest town in CA is Farad
>(exit 201 on I-80). Most of the terrain in between is inaccessible mountains
>(that stretch of I-80 runs along the narrow Truckee River canyon), so whoever is
>on the "Verdi, CA" exchange must be awfully hard to get to.
We've had two in the larger NYC area.
First is Fisher's Island, in Long Island Sound. Legally
it's part of Suffolk County, an eastern NYC suburb.
Per the Wiki writeup, though, it's "2 miles (3 km) off the
southeastern coast of Connecticut across Fishers Island Sound.
It is approx. 11 miles (18 km) from the tip of Long Island (NY)..."
The physical phone lines are run from Ct. central offices.
The other is the community of Marble Hill in Northern Manhattan.
The physical phone cables run through a Bronx central office,
and during the breakup of the (212) area code, these folk,
despite being in Manhattan, were assigned into the new (718) one.
(With the more modern carrier trunks and switches that don't
care about distance, I wouldn't make any bets on the
current arrangement).
--
_____________________________________________________
Knowledge may be power, but communications is the key
dannyb@panix.com
[to foil spammers, my address has been double rot-13 encoded]
Date: Mon, 2 Aug 2010 12:47:03 -0700 (PDT)
From: Lisa or Jeff <hancock4@bbs.cpcn.com>
To: telecomdigestmoderator.remove-this@and-this-too.telecom-digest.org.
Subject: Re: Model 15 RO Teletype available (OT)
Message-ID: <a60b8bad-229f-4ccf-a907-161b31460874@x20g2000pro.googlegroups.com>
On Aug 1, 8:46 pm, Wesr...@aol.com wrote:
> The teletypewriter required an operator only at the sending end. Morse
> operators were required at the receiving end, too. There were many more
> people with typing skills than ability to use code.
When a Morse telegraph line was converted to teleprinter, did the
physical line need to be upgraded to properly handle the bits from the
teleprinters? Even at the slow speed of 60 words-per-minute that's a
lot of bit* per second to move over a coarse open wire with ground
return. Were the relay repeaters sensitive and fast enough to replay
teleprinter bits?
(Teleprinters require bits with a good waveform--as the bit waveform
distorts the teleprinter can't make it out and errors occur.)
* Let's see, that's 1 word per second, or 5 characters per second, or
25 bits per second, right? (not counting start stop bits)
Date: Tue, 3 Aug 2010 18:18:18 +0000 (UTC)
From: richgr@panix.com (Rich Greenberg)
To: telecomdigestmoderator.remove-this@and-this-too.telecom-digest.org.
Subject: Re: Model 15 RO Teletype available (OT)
Message-ID: <i39mh9$eiq$1@reader1.panix.com>
In article <a60b8bad-229f-4ccf-a907-161b31460874@x20g2000pro.googlegroups.com>,
Lisa or Jeff <hancock4@bbs.cpcn.com> wrote:
>* Let's see, that's 1 word per second, or 5 characters per second, or
>25 bits per second, right? (not counting start stop bits)
No, its actually 6 characters or 30 bits/word. You have to count the
space between words. At the typical 66 speed, thats 66 bits/sec.
--
Rich Greenberg Sarasota, FL, USA richgr atsign panix.com + 1 941 378 2097
Eastern time. N6LRT I speak for myself & my dogs only. VM'er since CP-67
Canines: Val, Red, Shasta, Zero & Casey (At the bridge) Owner:Chinook-L
Canines: Red & Cinnar (Siberians) Retired at the beach Asst Owner:Sibernet-L
Date: Tue, 03 Aug 2010 11:25:50 -0500
From: Jim Haynes <jhaynes@cavern.uark.edu>
To: telecomdigestmoderator.remove-this@and-this-too.telecom-digest.org.
Subject: Re: Model 15 RO Teletype available (OT)
Message-ID: <LpqdnaQh1ZOT3sXRnZ2dnUVZ_gidnZ2d@earthlink.com>
On 2010-08-01, Lisa or Jeff <hancock4@bbs.cpcn.com> wrote:
>
> Oslin's WU history implies that their network was wholly teleprinter
> by 1950. However, other references, such as the WU employee
> newsletter, suggests here and there Morse operators remained in
> service on a few trunk lines until the early 1960s.
It appears that, while the part of the company handling customer messages
was all teleprinter, there was still some use of Morse by the maintenance
people. I've heard the same about AT&T - at the telegraph test boards
they had keys and sounders and the older employees knew how to use them.
When you're doing testing and maintenance the simplicity and portability
of the key and sounder are worth something, if you still have people who
know how to use them.
The railroads continued to use Morse right into the 1960s. In contrast
to Western Union, telegraphy was a tool in running a railroad rather than
the reason for existence of the company. And again the simplicity of the
hardware was worth something. The railroads did use teleprinters
extensively on circuits where the traffic warranted.
There is also the relationship between Western Union and the railroads.
In my home town, after the W.U. office closed for the evening, you could
send and receive telegrams by going to the railroad station. These
would be handled by Morse, with a connection at some place to a W.U.
office that was open all hours. In some smaller places the railroad
station was the W.U. office.
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End of The Telecom Digest (5 messages)
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