CHARACTER INPUT TELEPHONE SYSTEM

摘要

In the system a telephone (1) is provided to transmit a Dual Tone Multi-Frequency (DTMF) signalby utilising a character panel including several buttons (8) which are orderly arranged therein. An exchange (2) is provided to switch the DTMF signal. A DTMF receiver apparatus (3) converts the DTMF signal into a corresponding digital signal. A key word storage apparatus (5) includes a service name file unit for storing a service name file, and a key word dictionary unit for storing a key word dictionary. A text information storage apparatus (5) stores several information data corresponding to each service name. A central processor unit (6) converts a digital signal outputted from the DTMF receiver apparatus into an input character string to match the input character string with the key words stored inthe key word storage apparatus in order to provide information data.