| 摘要 |
PROBLEM TO BE SOLVED: To provide a doorphone system having telephone functions, corresponding to a doorphone system which makes a doorphone master base unit for accommodating and connecting a plurality of front door slave units, and being capable of automatically transferring an incoming call at the front door slave unit to a transfer destination, when detecting the incoming call at the entrance slave unit. SOLUTION: The doorphone system comprises the plurality of front door slave units 2 having calling buttons 11; the doorphone master unit 3 accommodating and connecting the entrance slave units; and a telephone base unit 5 telecommunicating with the doorphone master unit, and connecting with a telephone line 4. The telephone master unit has a transfer destination management table 60 that corresponds to transfer destinations to a doorphone number have been previously stored. The doorphone master unit notifies the telephone base unit of a doorphone call, to which the doorphone number is added, when the doorphone call of the entrance slave unit is detected. The telephone base unit reads the transfer destination, corresponding to the doorphone number of the doorphone call, and transfers the doorphone call at the entrance slave unit to an out-of-home telephone 6, with the same transfer destination number based on the transfer destination number. COPYRIGHT: (C)2007,JPO&INPIT
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