Programmable cartridge telephone communication system

Details Programmable cartridge telephone communication system Programmable cartridge telephone communication system

H - Electricity

04

Q

344/13, 344/29,

H04Q 3/54 (2006.01) H04M 9/00 (2006.01)

Patent

CA 1215159

- 19 - PROGRAMMABLE CARTRIDGE TELEPHONE COMMUNICATION SYSTEM Abstract A cartridge comprising circuitry and program instructions is added to a processor controlled telephone communication system to selectively change the operating system in accordance with the cartridge used.

441745

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