METHOD AND DEVICE FOR INTERCEPTION-PROTECTED TELEPHONE COMMUNICATIONS IN TELEPHONE NETWORK WHICH IS MADE FROM HYBRID COAXIAL CABLE Russian patent published in 1998 - IPC

FIELD: telecommunications, in particular, multiplex interception-protected communications. SUBSTANCE: hybrid network consists of optical fiber, coaxial cable and copper wires. System provides transmission of telephone and video signals between users so that signals of telephone and video duplex communication which are received by user or transmitted by him do not pass through network to premise of any other users. EFFECT: increased protection. 25 cl, 12 dwg