A visitor notifying device, a method of controlling a visitor notifying device, a terminal device, an intercom master unit, a control program, and a guest notifying system

摘要

PROBLEM TO BE SOLVED: To easily realize notification of a call from an interphone slave unit to a plurality of users.SOLUTION: A family message board server (1) includes a message board management section (14) for contributing a visitor message so as to be accessible at a portable terminal (4) of each of a plurality of residents registered in advance in response to a call from a shared call unit (6) to an indoor monitor (5) in communication service for displaying contributed messages in a time sequence.SELECTED DRAWING: Figure 1