Key telephone line circuit

Details Key telephone line circuit Key telephone line circuit

H - Electricity

04

M

379/33

H04M 3/42 (2006.01) H04M 9/00 (2006.01)

Patent

CA 1173576

KEY TELEPHONE LINE CIRCUIT Abstract of the Disclosure The line circuit of the invention uses only two multiple contact relays. The hold function is controlled with a reed relay having a single contact pair as well as three diodes whereas the line relay is only required to have a single contact pair. - i -

403188

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