WIRELESS INTERPHONE SYSTEM AND WIRELESS CALL INTERPHONE SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a wireless interphone system by which all the interphones share a doorphone interface, wiring construction between the interphones is not required and high-quality call can be secured without performing mechanical operation at an interphone which does not participate in the call. SOLUTION: In the wireless interphone system composed of a doorphone slave set 2, a wireless repeater 1 and a wireless interphone 3, the repeater 1 is connected to the set 2 via a signal line L. The repeater 1 transmits/receives a prescribed wireless signal to/from the interphone 3, thus the set 2 and the interphone 3 to conduct call with each other.