TELECOM Digest OnLine - Sorted: Re: Switchboards in Homes; Closing at Night

Re: Switchboards in Homes; Closing at Night

Jim Haynes (
Sat, 15 Oct 2005 19:17:04 GMT

There's a book "Everything Happened Around The Switchboard" that may
still be available from Mike Sandman and tells of that kind of

Every manual switchboard I've seen, from PBX to central office, has an
audible alarm that the operator can turn on or off. When turned on it
sounds when there is an incoming call that needs attention. It also
lights a signal lamp on the board. This circuit is always called a
"night alarm".

jhhaynes at earthlink dot net

[TELECOM Digest Editor's Note: Yes, and a foot pedal/switch allowed
the operator to temporarily mute the audible alarm also. PAT]

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