SPGDCM@CMSA.BERKELEY.EDU (04/25/87)
MSG:FROM: SPGDCM --UCBCMSA TO: NETWORK --NETWORK 04/24/87 15:06:09
To: NETWORK --NETWORK Network Address
From: Doug Mosher <SPGDCM at UCBCMSA>
Title: MVS/Tandem Systems Manager (415)642-5823
Office: Evans 257, Univ. of California, Berkeley, CA 94720
Subject: ring ship; area code history
To: telecom@xx.lcs.mit.edu
ring chip:
If it would take 14 weeks to get the real chip, an approach would be to
parasite off a device that in effect already has one. Examples:
1. Get a radio shack "fone flasher" that turns on a 110v outlet when the phone
rings, and either use a 110v relay or turn on a real light and use an scr or
CdS cell pointed at the light.
2. Use a sound switch (110v devices are available in the consumer market)
driven off the bell.
area code history:
Of all things, the San Francisco Chronicle had, in a column on 4/24/87, the
following article (excerpted here without specific permission): "... When were
area codes invented and why aren't the numbers sequential? Roger Orr of
Pacific Bell was able to answer... Area codes were invented in 1946, he said,
and the first thing determined were the middle digits. States containing more
than one area code, such as New York and California, were assigned a 1 in the
middle. States that had only one area code at the time (today, they may have
more), were assigned... 0 in the middle. Thus, California had 213 (Los
angeles), 415 (Bay Area) and 916 (Sacramento area). Vermont was 802.
The two digits on the end(s) of the code (4 and 5 in the Bay Area) were
assigned upwards from 2, according to frequency of use. Higher digits went
to... rural areas... Sacramento (had 916, took longer to dial than LA with
213).
The codes most often used were New York (212), LA (213), and Wash. DC (202)...
Thanks, Doug
ring ship; area code history