telecom, LecStar Uses Power Lines For VoIP Trial

comp.dcom.telecom - Telecommunications digest. (Moderated)


telecom >> LecStar Uses Power Lines For VoIP Trial

by Jack Decker » Wed, 18 Aug 2004 09:55:10 GMT

http://www.techweb.com/wire/story/TWB20040817S0010

By Antone Gonsalves, TechWeb News

LecStar Telecom Inc. on Tuesday said it is testing the use of
broadband over power lines in providing Internet-based telephone
services.

LecStar, the Atlanta-based communications subsidiary of Fonix Corp.,
launched a trial of the voice-over-Internet service using power lines
of a Southeastern United States electric utility company, which
LecStar declined to identify.

The trial, which started earlier this month, involves about 165 homes
in the utility's service region. Two other companies that provide
other Internet-based services are also participating in the trial to
an equal number of homes, Michael Britt, vice president of channel
development for LecStar said.

Full story at:
http://www.techweb.com/wire/story/TWB20040817S0010

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telecom >> LecStar Uses Power Lines For VoIP Trial

by John McHarry » Thu, 19 Aug 2004 08:08:23 GMT



This is probably because they don't want people to know why their
radios suddenly quit working.
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2. AT&T Power Line Test May Aid Its VoIP Rollout

3. 25 cps Power, was: Tie Lines was Foreign Exchange Lines 

In a message dated Sun, 29 May 2005 21:58:31 UTC, Danny Burstein
 XXXX@XXXXX.COM > writes:

> Parts of some passenger stations tapped into this 25 cycle grid for
> use by the incandescent lamps. This led to quite noticable flickering
> whenever the temperature dropped ...

As a teenager, in the 1940s, I stayed with my folks at the Fred Harvey
Hotel in Gallup, New Mexico.  I pondered about why the flickering
(more noticeable from the corner of your eye than looking directly at
it, then realized the power supply was no doubt from the Santa Fe
Railroad facilities adjacent, probably installed years before Gallup
had commercial power.

I'm not sure about the relationship to temperature.  This was in the
middle of summer and there was certainly no drop in the temperature.

(Fred Harvey and the Santa Fe Railroad were associated from some time
in the late 1800s.)


Wes Leatherock
 XXXX@XXXXX.COM 

[TELECOM Digest Editor's Note: Remember also the "Harvey Girls" who
were like 'stewardesses' on the Santa Fe trains and the 1940's movie
about the Harvey Girls, and they were always singing that song about 
the railroad ... how did it go?  Something about " ... my day, and the
Atchison, Topeka and the Santa Fe ..." It was a very famous movie in 
the 1940's and a very popular song.  PAT]n

4. 25 Hz power Tie Lines was Foreign Exchange Lines

5. 25 cps Power, was: Tie Lines was Foreign Exchange (FX) Lines 

In < XXXX@XXXXX.COM >  XXXX@XXXXX.COM 
(Robert Bonomi) writes:

> I don't know when the last 25-cycle power was phased out.  Keokuk, Iowa, 
> had a 25-cycle hydroelectric plant -- driven by the Mississippi River, 

25 cycle/second power was still in use for portions of the NYC area
transit facilities until about a decade ago. While the subway trains
ran, and run, on 600VDC "third rail" power (until very recently there
were big advantages to operating large motors off DC), some of the
commuter railroads had legacy stuff.

(The newest subway motor controllers actually take that DC from the third 
rail and transform it to 3-phase AC before feeding it to the motors.)

Parts of some passenger stations tapped into this 25 cycle grid for
use by the incandescent lamps. This led to quite noticable flickering
whenever the temperature dropped ...

(All primary lighting is now courtesy of the regular 120/208/240v
utility grid feeding fluorescent fixtures. There's a modest amount of
incandescent stuff around for small areas.

Also, some emergency, backup, and area-work circuits feed a "five
pack" of 120V incandescents off the 600VDC third rail.)

_____________________________________________________
Knowledge may be power, but communications is the key
		      XXXX@XXXXX.COM  
[to foil spammers, my address has been double rot-13 encoded]

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