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Bell wire: Difference between revisions
Eliminating the tinkling
(Introduce the bell wire) |
(Eliminating the tinkling) |
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The modification to the wiring was to locate the bell capacitor in the master socket, and use an additional wire out to all other sockets to drive the bells of all telephones on the line. The bell capacitor in the master socket was connected at one end to the 'B' wire, and at the other end to the new 'bell wire'.
Individual telephones no longer used a bell capacitor, and connected their local bell from the bell wire to the 'A' wire.
By itself this doesn't eliminate the tinkling, until it is arranged that when a telephone goes 'off hook' it also makes a connection between the bell wire and the 'A' wire. This effectively short-circuits the bells of all telephones on the line, and prevents any bell from tinkling during pulse dialling.
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