SWITCHING DEVICE FOR TELEPHONE SET WITH HANDSET ENABLING ITS ELECTRICAL CONNECTION TO SOME OTHER ADDITIONAL TELEPHONE SET BY REPLACEMENT

摘要

FIELD: telephone communications. SUBSTANCE: switching device of one of proposed design versions has unit provided with at least one receiving jack; each receiving jack is designed for connecting one of handset leads. One of mentioned receiving jacks has selector switch which operates under pressure of handset which enables replacing the latter by additional telephone set. EFFECT: simplified and fool-proof design enabling, for example, communications in free-hand mode and connection to conference-communication system. 9 cl, 7 dwg