| 摘要 |
PROBLEM TO BE SOLVED: To provide a key telephone main system capable of using a preset dial function according to a same operating procedure as a dialing method in a conventional premises telephone system. SOLUTION: The key telephone main system 10 comprises a calling function F10, a key data detecting function F11, a specified number judging function F12 for judging an input of a special service code for outside line call origination, an outside line acquiring function F13, an artificial dial tone generating and sending out function F14 for generating an artificial dial tone when the special service code for outside line call origination is input, a data transmitting/receiving function 15, a data storage function F16, and a key telephone set state setting function F17. COPYRIGHT: (C)2005,JPO&NCIPI
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