TR-201

TR-201, according to the International Telecommunication Union (ITU), is a technical recommendation. Specifically, it pertains to testing methods for determining the characteristics of digital transmission systems which are designed to operate on metallic local lines. It defines various parameters and procedures for evaluating performance aspects such as bit error ratio, jitter, and signal-to-noise ratio in the context of these digital transmission systems. These tests are essential for ensuring the reliable delivery of digital services over traditional telephone wiring infrastructure. The standard focuses on systems typically used for services like DSL (Digital Subscriber Line) and other technologies that leverage the existing copper infrastructure for high-speed data communication. TR-201 provides a standardized approach to assess the suitability and performance of these transmission systems in real-world operating environments.