Yes, quite a few. The first #1 ESS deployment was, as I recall, in
1967. It started off slow, but DC became the first place to experience a major deployment, for obvious reasons. ;-)The public wouldn't have known about it because calling features weren't promoted much, and not at all in some areas, until 1975, or so. Touchtone was available on No 5 XBAR in most of those areas in the the late 1960s.
The AT&T network policy makers deliberately held back on offering calling features in the POTS environment for a number of reasons. But, Centrex government customers in DC were offered the full array as soon as the cuts were complete.
Here is a ad featuring a Correcting Selectric II in 1973.
Reporters may not have had Correcting Selectrics in 1973 but all the bosses secretaries, including the White House I suspect, got them really quick.
I'd have to look through my old BSTJ's but I recall the AMPS tests being conducted in New Jersey in the late 1970s. Chicago was the first launch of AMPS in 1983.
[TELECOM Digest Editor's Note: Do you recall one difference between the way 'call forwarding' was originally set up and later on? People could 'chain call-forward', that is, you forward yours to me; I then forwarded mine to some other party; they forwarded theirs onward, etc. Let's call them parties 'A', 'B', 'C' and 'D'. People realized they could forward infinitly if they had enough co-conspirators to help them, and make a (considerable) long distance call for the price of a local call. The next generic of 'call forwarding' did not allow that. Yes, A could forward to B and B could forward to C, etc, but calls directed to A _stopped_ when they reached B. Calls directed to B _stopped_ when they reached C. Officially the theory was that persons calling A only wanted to talk to A. For A's convenience, his calls could be forwarded to B, but party A did not want to be forwarded onward to C or D. Or, so said telco. And originally, if A forwarded to B and contemporaneously B forwarded to A, it would start an endless loop until eventually all circuits in the CO were tied up. Telco quickly put a stop to that also. But that 'chain forwarding' was foolish anyway; people could rarely -- if ever -- make a series of short distance calls for less expense than a single long distance call. PAT]