COMMUNICATION INTERFACE OF TELEPHONE LINE Russian patent published in 2011 - IPC H04M11/04 

FIELD: information technologies.

SUBSTANCE: telephone line communication interface (TLCI) module realises coupling of panel of safety provision with telephone line of telephone network and comprises receiving optically-coupled isolator, transmitting optically-coupled isolator and optically-coupled isolator to control connection of the line, which receive signal from the telephone network, and communicate signal to panel of safety provision for reverse transfer. Optically-coupled isolator to control the line includes input and output sides of line connection. Input side of line connection receives signal of line connection from safety panel. Output side of line connection has input and output lines of line connection. Output line of line connection actuates line connection switch to communicate signal of line connection to telephone line of telephone network. Output side of line connection is connected serially to receiving input side of receiving optically-coupled isolator.

EFFECT: provision of possibility to function at long telephone lines.

20 cl, 6 dwg