Miller, Kempster Blanchard, 1870-1933 · New York : McGraw publishing company · leaf 648
o the line and cut-off relays, alsoto the answering jack and lamps are made to four clips on theopposite side of the intermediate distributing frame, all of theseconnections being permanent, therefore allowing of no changes inthe relation between the answering jack and the line and cut-offrelays.… … FIG. 459.-DIAGRAM OF CONNECTIONS THROUGH INTERMEDIATEDISTRIBUTING FRAME-KELLOGG SYSTEM. lamp and relays, may be altered by changing the connection of theintermediate wires. In Fig. 459 is shown the method of accomplishing the intermediatedistributing board changes when applied to the two-wire…
Telephone
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