Re: History--special Panel dialing for manual and party lines.

Re: History--special Panel dialing for manual and party lines.

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Subject Author Date
Re: History--special Panel dialing for manual and party lines. hancock4 02-09-2008
Posted by on February 9, 2008, 3:57 pm
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> There was a thread about this on the TCI list a few years ago. Steph
> Kerman, one of the regular TCI contributors, explained it as follows:

Thanks for the reference. You know, I'm a member of TCI, but I have
no idea how to get into any of their online stuff. (Every time I try
I can't get in). I get their paper edition of the newsletter and
that's it.



> So yes, a number such as "PENnsylvania 10240" was indeed dailable, the
> cue to the equipment being the "1" as the fourth digit. But it would
> have been listed as 3L+5D, not 2L+6D as you suggest.

NYC started off with 3L+5D, but soon switched to 2L+6D since they were
running out of exchanges. I think when they switched the dial pulls
stayed the same, that is, PEN- became PE 6-. In contrast, when
Philadelphia had to switch for the same reason (after WW II), they
dial pulls became different for almost every exchange. (ie WAL became
WA 2, WAV became WA 4, and some exchanges completed renamed.)

As an aside, to this day, in the Philadephia official exchange charts,
the original name still is used for the address code, that is, you
will see "WAV" for everything in the WAverly district.


> Apparently seven-digit numbers in the form "Main 1234 J" did exist
> somewhere. Miller (McGraw Hill 1933) cites the following directory
> listings in Figure 8, page 20:http://tinyurl.com/36p5v5.

I just found out that they existed in Cinncinati in the 1931 panel
conversion of Cherry Parkway. If the party letter was missing or
wrong on a dialed call to a manual exchange, a signal would light for
special operator attention.


Thanks again for the info.


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Posted by on February 11, 2008, 12:52 pm
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P.S.

Panel was designed for a 30 year lifespan. But in 1950 they added HY
9 in New York as a Panel exchange. Would anyone know why they didn't
use #1 xbar or #5 xbar by that point? Was it to be compatible with
the other gear?


Posted by Rick Blaine on February 11, 2008, 7:55 pm
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hancock4@bbs.cpcn.com wrote:

>Panel was designed for a 30 year lifespan. But in 1950 they added HY
>9 in New York as a Panel exchange. Would anyone know why they didn't
>use #1 xbar or #5 xbar by that point? Was it to be compatible with
>the other gear?

Bell didn't thow out perfectly good equipment. It's possible that the panel in
question was surplus from another site and moved to HY9.


Posted by T on February 11, 2008, 7:55 pm
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In article <747e822b-ca9a-44f1-9a76-
6aa0c7ced34b@v67g2000hse.googlegroups.com>, hancock4@bbs.cpcn.com
says...
> P.S.
>
> Panel was designed for a 30 year lifespan. But in 1950 they added HY
> 9 in New York as a Panel exchange. Would anyone know why they didn't
> use #1 xbar or #5 xbar by that point? Was it to be compatible with
> the other gear?
>
>

Panel did play nicely with SxS gear though so did Xbar systems.

I don't really know the reasoning but have a suspicion it was due to the
profitability of NYTel.

Mother Bell favored her more profitable children more than those that
weer less profitable. Hence the reason why all the metro area of RI was
#1ESS and #5Xbar during the late 60's and 70's. Then of course during
the early 80's they started in earnest on going all digital in RI but
because of divestiture we ended up with Nortel DMS switches, and a few #
5ESS switches.


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