Integrated telephone and intercom system

Details Integrated telephone and intercom system Integrated telephone and intercom system

H - Electricity

04

M

H04M 1/00 (2006.01) H04M 9/06 (2006.01)

Patent

CA 2177098

An integrated telephone system is provided having a connection to a Central Office (CO) line and a connection to at least one secondary line. The CO line and/or the secondary line may be selectively accessed for two-way communication independently of each other and may be signalled for call waiting, call holding, and busy function. The accessing and selection are operative through a single subscriber telephone instrument. The entire system circuits are mounted on a single circuit board having pins for connection to common bus for combined use with a plurality of similarly constructed systems assigned to individual subscribers.

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