AUDIO COMMUNICATION SECURE MODULE FOR IP-PHONE Russian patent published in 2019 - IPC H04L9/12 H04M1/05 G06F21/60 

FIELD: data processing and transmission.

SUBSTANCE: invention relates to telecommunication systems and can be used to create data transmission devices with hardware-software protection against unauthorized access to information transmitted along an audio path. Protected audio communication module for an IP telephone comprises a microphone, a speaker, an encryption unit and a decryption unit. Protected audio communication module further comprises an analogue-to-digital converter (ADC), a digital to analogue converter (DAC), a key information unit, a keyboard switching unit, a telephone mother board, a USB token, a smart card and a telephone keyboard, the output of which is connected to the input of the keyboard switching unit, which output is connected to second input of motherboard of telephone, first input of which is connected to output of encryption unit, first input of which is connected to output ADC, which input is connected to output of microphone. Speaker input is connected to the DAC output, the input of which is connected to the output of the decryption unit.

EFFECT: broader functional capabilities by eliminating interception of a PIN code for unlocking a container with key information using compromised software on the motherboard of the telephone.

1 cl, 1 dwg