EN 300 386 V1.6.1 outlines the EMC (Electromagnetic Compatibility) requirements for non-radio equipment used in public telecommunications networks, excluding equipment beyond Network Termination Points (NTPs). It includes switching equipment (e.g., local exchanges, network servers), non-radio transmission equipment (e.g., multiplexers, line equipment), power supply equipment (e.g., uninterruptible power supplies), and supervisory equipment (e.g., network management tools). The standard ensures that such equipment meets adequate immunity levels and does not interfere with other equipment, though it does not cover extreme disturbance cases. Equipment designed for specific applications, such as television distribution or optical amplifiers, is not included. Functions such as switching and transmission must be tested for all equipment under the standard.