4Secure Bi-Directional Transfer
4BDT is a bi-directional TCP proxy designed to be used in conjunction with two separate OPDS products. 4BDT allows ‘response’ data to be securely returned to an outbound TCP session. 4BDT is usually used in conjunction with 4XJS to securely filter the inbound and outbound traffic, typically HTTP request and response data.
4BDT is installed onboard the OPDS platform.
Digital electronics or digital (electronic) circuits are electronics that operate on digital signals. In contrast, analog circuits manipulate analog signals whose performance is more subject to manufacturing tolerance, signal attenuation and noise.