1. In telegraphy, the source of power that actuates the telegraphic station recording instruments, as distinguished from the source of power that furnishes current to the line.
2. In telephony, a system in which each telephone instrument has its own source of power, as opposed to being powered from the central office.
3. A source of local power for a telephone instrument.
Source: from Federal Standard 1037C and from MIL-STD-188
C. William Doody[?]
Peter A. Stollery[?]
P. Michael Pitfield[?]
Jerahmiel S. ...
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