The SOC5000-30 comprehensive multiplexing equipment (also known as telephone optical transceiver) is suitable for accessing voice and data services at the entrance of the "optical in copper out" project, and can achieve remote extension of various voice, data and other services through E1 or fiber optic lines.Adopting fiber optic transmission, the equipment is equipped with 124 channels of FXO or FXS, 4E1, and 1-2 channels of physically isolated Ethernet services.This series of products is also known as multi-channel protection comprehensive multiplexing equipment. Its feature is that when the device selects E1 channel transmission, any one E1 can transmit 128 voice channels, saving E1 resources; It can also function as a "1+3 channel protection" and maintain smooth communication during switching; Simultaneously serving the functions of confidentiality and line detection. It is widely used in various operators, broadcasting and television networks, public security, military (confidential), power, railway, highway, transportation, finance, government, and private networks of enterprises and institutions with branch offices.