| 摘要 |
PROBLEM TO BE SOLVED: To exchange an extension number and extension data used in a moving origin with a moving destination and to simply and easily utilize them as they are even in the moving destination when the user of an extension communication terminal moves from a resident place. SOLUTION: When the user originates a call with the extension number owned by himself/herself as a destination by a prescribed "extension data exchange request" in a moving destination telephone terminal 21, in a key telephone apparatus 10, a control part 13 not only calls an area where the extension data of the user are recorded from a correspondence table 30 and exchanges them with the extension data of a moving destination extension number but also exchanges the destination extension number of a mounting position where the exchanged extension data are recorded inside the moving destination area of the correspondence table. In the case of being over the plurality of key telephone apparatuses, a signal channel different from an information channel is utilized for transferring signals and data between the key telephone apparatuses. COPYRIGHT: (C)2008,JPO&INPIT
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