This was heard directly from the wall-mounted speaker. "Ringing" from the console was done by a distinctive high-frequency (buzzing) sent to the called classroom. The handset was mounted on the wall immediately below a foot-square in-mount wall speaker. You always knew when the office picked up the call (or just before the room was going to be called) by hearing a slight "click" from the wall-mounted PA speaker before the call initiated. That is, calls from the classroom to office were simply accomplished by picking up the wall mounted handset from its cradle (having a switch within). Has anybody got any info them and/or the products they provided?
However I've been totally unable to find any particulars about the company and their product line. New England Sound provided intercom and PA equipment for a lot of other area schools here in the Boston area. Otherwise everything else was pretty much the same including the AM-FM radio, PA mike and individual slide-switches for each extension (classroom). Instead of a console-mounted handest mounted on the left, a desk set was used. My high school was built in 1962 and was equipped with a similar console but it was made by New England Sound. Working with true-to-life Western Electric 1A2 vintage desk sets (as a hobbiest for many years), I now have my own little exchange (which reaches via open-wire to my back yard!). However, this never diluted my fascination for PBX (Private Branch Exchange) systems. Back in those days you were rather afraid to ask for things from your principal that might have been "out-of-the-box" questions. My high school (Weymouth, MA) had a console like you see here and I always was intrigued by its workings. Very especially those that were other than the everyday household desk or wall sets we were familiar with in the 60s/70s. Here's something that fascinated me almost as much as insulators while I was in high school. , posted Januhits 608 View Original (364 x 498) 54KB Stromberg-Carlson School Intercom PBX Ad 1955 By Joe Maurath, Jr.
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