IC CARD TELEPHONE SET SYSTEM

摘要

PURPOSE:To apply abbreviated dial by using an IC card by switching a microcomputer of an abbreviated dial function built in a telephone set to the IC card position when the IC card is loaded to the telephone set. CONSTITUTION:The microcomputer 1 comprising a CPU1a synthesizing a dial tone, a RAM1b storing an abbreviated dial and a ROM1c storing a program is connected to a bus switching section 3 via a bus 2, and the bus switching section 3 connects any of a bus 2 and other bus 2' connected to an IC card reader 4 to a dial/line interface 5. The switching section 3 connects normally the dial/line interface 5 to the bus 2 and connects the interface 5 to the bus 2' when the IC card is loaded to a reader 4.