This number was most likely from the time when the 714 area code covered the area outside of LA, including all of Southern California San Diego county and east, Riverside County, San Bernardino County, and the east side of the Sierras all the way up to Inyo. I remember that no prefix in Orange County
(Read More…)
This Western Electric 550 or 555 manual switchboard was used in the OUSD Administrative HQ when it was in the old bldg on Glassell that is now the Chapman University College of Law. It was rescued from the dump. I hope to find a new local home for it where it can be seen by
(Read More…)
From FB group Bell Telephone Ohhhhh, Ed Vaughn, you gave me a big headache. Those message waiting lights… We had a 1200 baud MW line directly from the CO to our PBXes, and one PBX then distributed it to dozens of others in the district over the network, not by ethernet, but by XNS over
(Read More…)
From FB group Bell Telephone… In the days of analog phones like 500s and 2500s, Ma Bell had the phone matched to the line, so whatever the line length was, it compensated and the signal levels were very uniform, it worked great. Then came along the full duplex digital system, and everything went to hell.
(Read More…)
From my post to FB group Bell Telephone… We were having problems with one of our 4 wire point to multipoint datacomm circuits. Every morning at a little after 9 AM the circuit would go down. I called in the problem and a Pac Bell tech came out, but couldn’t find a problem. Next day,
(Read More…)
Posted to FB Antique Telephones group as a reply to Kevin J. Fitzgerald I helped some students in our computer lab, and one high school kid, I think his name was Robert, was totally into phones. He had written a Basic program that printed a list out, with the various exchanges in the 714 area
(Read More…)
From my comment on the FB group Bell Telephone Pat Chicas I worked for RSCCD, which owns the Sheriffs Training Center. Man, I would have loved to slap their hands! The OCSD installed their phone system on prem, and we supplied the data circuits, so our patch cords and theirs shared the same patch panels
(Read More…)
From a 2017-06-10 comment regarding a Weston capacitance meter on FB group vintage test equipment Reminds me of the ” kicker” meters the phone techs used on the phone lines. There was a polarity switch that reversed the pair, and the tech could tell about the line from the kick the meter needle gave when
(Read More…)
I came across a schematic of a computer microphone from Circuit Exchange. This interested me because I have never had any success with using the microphone jack found on the back of desktop PCs. First off, the typical microphone jack seems to be a three conductor, 3.5 mm ‘headphone’ jack, with the tip being the
(Read More…)
