. Automatic telephony; a comprehensive treatise on automatic and semi-automatic systems . L:> To Automatic- Switchboard. Fig. 263.—Simplex controlling circuit for rural party line. battery. The line relay controls the loop-dialing circuit to the auto-matic switches. When the receiver is taken from the hook, the line relay pulls upand closes the line to the automatic switchboard. The operation of thecalling device is thus relayed to the switches, and the connection estab-lished in an obvious manner. Figure 264 shows the complete telephonecircuit. Reverting calls on this line are rung in the
. Automatic telephony; a comprehensive treatise on automatic and semi-automatic systems . L:> To Automatic- Switchboard. Fig. 263.—Simplex controlling circuit for rural party line. battery. The line relay controls the loop-dialing circuit to the auto-matic switches. When the receiver is taken from the hook, the line relay pulls upand closes the line to the automatic switchboard. The operation of thecalling device is thus relayed to the switches, and the connection estab-lished in an obvious manner. Figure 264 shows the complete telephonecircuit. Reverting calls on this line are rung in the usual manner by handgenerators. It is possible to add this equipment to existing magnetotelephones of suitable type
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Keywords: ., bookcentury1900, bookdecade1920, booksubjecttelephone, bookyear19
