Telephone instruments

Details Telephone instruments Telephone instruments

H - Electricity

04

M

379/80

H04M 9/08 (2006.01) H04M 1/00 (2006.01) H04M 19/04 (2006.01)

Patent

CA 1221482

IMPROVEMENTS IN TELEPHONE INSTRUMENTS Abstract of the Disclosure An integrated circuit for a telephone instrument provides the basic (POT) service requirement. The circuit has means whereby one or more ancillary circuits may be connected to provide additional facilities, e.g. hands-free operation.

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