| 摘要 |
PROBLEM TO BE SOLVED: To integrate used call devices, to suppress manufacturing costs and enhance appearance of the call devices in the case of performing a call operation. SOLUTION: A hand button plug 100 of hand buttons 1a to 4a, 1b to 4b, ... to be used in the case of performing the call operation is attachably/detachably connected to a hand slave unit receptacle 210 of hand slave units 21a to 24a, 21b to 24b, ..., a hand slave unit plug 211 of the hand slave units is attachably/detachably connected to a plate slave unit receptacle 110 of plate slave units 11a to 14a, 11b to 14b, ... in the same shape as that of the hand slave unit receptacle and the hand slave unit receptacle is provided so that a hanger 212 of the hand slave unit becomes the bottom surface 213 at a state that the hanger is hung from a hook of the plate slave unit. COPYRIGHT: (C)2006,JPO&NCIPI
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