FIELD: radio communication engineering. SUBSTANCE: interface system designed for connecting various auxiliary devices to radiophone and for handling conflict situations between conflicting requests to give access to radiophone audio channel by means of auxiliary devices has interface system controller and switch for connecting audio channel of chosen auxiliary device to radiophone audio channel. Method is also proposed for input of user-chosen operating-parameter settings to control interface system operation and assign radiophone access priorities. EFFECT: provision for connecting plurality of devices. 11 cl, 6 dwg
