Self aid type telephone system for guarding entrance
A telephone system, self-service technology, applied in the field of wired communication systems
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[0026] The present invention will be described in detail below with reference to the accompanying drawings and the best embodiment.
[0027] figure 1 is the structure of the general routine application, figure 2 Is the most basic structure, in conjunction with above accompanying drawing, the present invention is a kind of janitor telephone 5 that automatically dials and calls conversation under switch signal triggering, and it consists of figure 1 The external start switch 14, the external mechanical switch 15 and the vibration switch 22 etc. (hereinafter referred to as figure 2 Among them: external starting switch 14); button 2, wherein there are commonly used buttons such as 0~9, *, #, and hands-free keys etc.; door phone 5, wherein by telephone base 1, button 2, Built-in microphone 3 and built-in speaker 4 (hereinafter referred to as figure 2 Among them: built-in hands-free 4), Windows 6, microphone 7, handle 8, receiver 9, handle wiring 10, external microphone interf...
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