I just love to watch trains and explore the history of Telephone Exchanges.
Thursday, November 15, 2012
GTD-5 EAX Forum - Receiver Off Hook Tone For G.T.D.-5 E.A.X.
GTD-5 EAX Forum - Receiver Off Hook Tone For G.T.D.-5 E.A.X. Is the r.o.h. tone a siren or a buzzer? How does the r.o.h. tone sound? Is the r.o.h. tone autonatic or manual? How does the switchboard know that someone has left their phone off hook tone? How do they opperate the r.o.h. tone?
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