[GreenKeys] Teletype model years...

[Jack]

Don et al,

We still had model 15's in New York Telephone (in the
Service Order network)  when I left the TTY gang in 1978!

I had been running a one-man program previous to that
replacing the Model 15/14 tables with Model 28ASR's
that were being taken out of service. At the same time, we
were installing the "ComDat" Teletype video terminals
(the size of a Model 19 table) which sent Service Orders to
either 100 wpm Model 28's or Model 35's. It definitely
was a time of "mixed" equipment. There were guys in the
TTY gang who refused to work on anything but 15's.

Jack WA2HWJ