GQ3004 telephone optical terminal is a new generation of high integrated voice data integrated access device with bandwidth automatic dynamic allocation function. It can transmit Ethernet, FE1, RS232, telephone and other data services and various voice signals in a standard optical fiber channel. It has the characteristics of powerful functions, flexible structure and modular design. According to the different network needs of users, various interface modules can be selected, and interface modules can be added or replaced to meet the requirements of users in different application environments, protecting the existing investment of users.