FTTB (Fiber To The Building): FTTX + LAN is a network connection mode, the optical signal is mainly connected to the office building or apartment building within the main distribution box to achieve optical fiber signal access, and in the office building or The interior of the apartment building is still the use of coaxial cable, twisted pair or fiber optic distribution signal to achieve the realization of high-speed data applications. We call FTTX + LAN broadband access network (referred to as FTTB), this is one of the most reasonable, most practical, most cost-effective broadband access methods. advantage Fast: Fiber to the floor, cable home, the user uplink and downlink rates generally up to 10Mbps-50Mbps, up to 100Mbps. Large capacity: each household can enjoy the two-way balanced 10M-50Mbps bandwidth. Investment Province: FTTB is mainly used for transformation of old residential areas. Residential areas that already have network cables, telephone lines and coaxial cables do not need to deploy optical fibers and save a large amount of wiring expenses. Low price: Unit bandwidth is cheaper than FTTH and CMTS Wide range of applications: High-speed Internet access, VOD, SOHO, distance education, video conferencing, ROBO, telemedicine and Internet connectivity.