Multiline switch

Details Multiline switch Multiline switch

1979-05-21

1980-11-25

Safourek, Benedict V.

Telecommunications

Transmitter and receiver at separate stations

Short range rf communication

340147SC, H04B 702

Patent

active

042362504

ABSTRACT:
The present invention is directed to a system which accomplishes forwarding or retransmission of signals requiring preemphasis and signals not requiring preemphasis while using a single spare channel for forwarding either type of signal upon failure of a primary channel. This is accomplished by designing each channel to have passive and selectable circuits through which the signal is passed for preemphasis or attenuation depending upon the type of signal used in the primary portion of that communication channel before being applied to the selection switches of the spare channel.

REFERENCES:
patent: 2733296 (1956-01-01), Maggio
patent: 3035169 (1962-05-01), Griffith
patent: 3072748 (1963-01-01), Abraham
patent: 3111624 (1963-11-01), Farkas
patent: 3588700 (1971-06-01), Shiki et al.

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