Telephone conference equipment mainly includes conference bridges and conference telephones. Telephone conference is one of the most commonly used means of multi person communication in office communication, and is currently the most efficient and widely used tool for multi person communication. Conference Bridge, also known as Interactive Telephone Conference System; Also known as a multi-party conference bridge, it is equivalent to a virtual conference room. Encourage people from different locations to join this virtual conference room through conference terminals (such as phone, mobile phone, venue system, etc.) for meetings. Features: It can achieve telephone conferences from 3 to any party. Hardware system, stable and reliable, full duplex communication for all parties, simple to use, excellent performance, powerful functions, low networking cost, rich interfaces, free expansion, and strong adaptability. A telephone provides a conference microphone signal input interface and a speaker signal output interface for the venue. The directional conference microphone signal input interface adopts high-quality microphone signal amplifier and automatic gain adjustment technology, so speakers do not need to speak close to the microphone; By using a directional conference microphone to completely filter out environmental noise, it is clear, stable, loud, and authentic, completely solving the problem of spacious conference phone sound collection. The speaker signal output interface can be connected to an active speaker or power amplifier, providing first-class comfortable auditory enjoyment