Selective Interruption Device for Data Communication Lines
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Solution Overview
Problem
Existing devices for interrupting communication lines between computers and networks physically disconnect all signals, including non-security-risk signals, when used to protect against computer attacks, leading to unnecessary disruption of independent signal transmissions.
Innovation Solution
A device with RJ45 input/output sockets that includes interrupters for data transmission wires and conductors for telephone signals, allowing independent control of data communication interruptions while maintaining telephone signal transmission, implemented using a printed circuit with manual or remote actuation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all signals are physically interrupted to protect against computer attacks, then computer security is improved, but telephone signal transmission is disrupted
Solution Approach 1:
The communication line is divided into separate wire groups (first group for data, second group for telephone signals). The interrupter selectively interrupts only the first wire group while leaving the second wire group connected, allowing selective interruption of data signals without affecting telephone transmissions.
Solution Approach 2:
Different parts of the communication line receive different treatments: the first wire group is equipped with interrupters for selective data signal interruption, while the second wire group has continuous conductors for uninterrupted telephone signal transmission. This local differentiation resolves the contradiction by applying security measures only where needed.
2Reliability
If all signals are physically interrupted to protect against computer attacks, then computer security is improved, but other independent signal transmissions are disrupted
Solution Approach 1:
The communication line is segmented into multiple functional wire groups (data transmission and telephone signals). The interrupter mechanism is applied selectively to only the data transmission wires, allowing other independent signals to continue uninterrupted.
Solution Approach 2:
The interrupter mechanism is locally applied only to the first wire group carrying data signals, while the second wire group carrying telephone signals remains continuously connected. This localized application preserves adaptability for different signal types while maintaining security for data transmission.
3Productivity
If a physical connection is maintained for wide-band connections, then data communication capability is improved, but vulnerability to computer intrusions increases
Solution Approach 1:
The physical connection for data transmission is made dynamic through the interrupter mechanism, which can switch between connected and interrupted states. This allows the system to maintain connectivity for data communication when needed while providing the ability to rapidly interrupt the connection for security purposes.
Solution Approach 2:
The interrupter acts as an intermediary mechanism between the data communication line and the computer. It provides controlled access to the physical connection, allowing data transmission to proceed normally while enabling rapid disconnection to prevent intrusions, thus mediating between communication capability and security.
Data Source
AI summary
An interruption device arranged in a communication line including first and second cables in series, each including a first group of wires for the transmission of computer data and a second group of wires independent of the computer data, includes: a box provided with first and second input/output sockets with which the first and second cables, respectively, are connected; interrupters each connected between the first and second input/output sockets inside the box and actuable from outside the box, these interrupters being associated respectively with the wires of the first group; and transmission elements not including an interrupter and each connected between the first and second input/output sockets inside the box, these transmission elements being associated respectively with the wires of the second group. In a variant, the second input/output socket is replaced by two sockets associated with the interrupters and the transmission elements, respectively.