Twisted pair communication systems are widely used in various applications, including Ethernet, telecommunications, and industrial automation. However, the increasing demand for high-speed data transmission and reliable communication poses significant challenges to the design and analysis of these systems. This paper proposes a novel framework, called TwistedHD, for modeling and analyzing twisted pair communication systems in high-definition. TwistedHD integrates advanced signal processing techniques, electromagnetic field theory, and communication system models to provide a comprehensive and accurate representation of twisted pair systems. The framework is validated through simulations and experiments, demonstrating its effectiveness in predicting system performance and identifying potential design improvements.