MULTIPLE DWELLING HOUSE SPEECH COMMUNICATION SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a multiple dwelling house speech communication system that can select a guest notice tone from among a plurality of guest notice tones. SOLUTION: An interphone master unit 1 stores a plurality of the guest notice tones and outputs a selected guest notice tone among a plurality of the guest notice tones in advance when receiving a call from a doorphone slave unit 2.