Profile: Hua Jiahui (HK) Technology Co., Ltd. specializes in providing communication equipment. SmartAX MA5616 multi-dwelling unit (MDU) has the following features such as high access density, superior processing, high reliability, easy maintenance, energy saving, and an architectural design with an eye on the future. MA5616 provides ADSL2+, VDSL2, SHDSL, POTS, FE, P2P, ISDN, and combo user ports, and it supports dual upstream transmission channels through auto-adaptive GPON & GE ports. The MA5616 can be installed indoors & outdoors in a range of locations, such as in corridors & cabinets, and can be used in fiber to the curb (FTTC), fiber to the building (FTTB), mini-DSLAM, and mini-MSAN scenarios. MA5616 focuses on providing services for communities with a high population density, and small to medium enterprise users. MA5616 can work in temperatures as low as -40°C, and as high as 65°C for extended periods of time, and it has a 6-kV surge protection capability, both of which are better than the industry standard. In addition, the corrosion-proof design of the service boards extends the device's life, and a redundancy fan design ensures that the MA5616 continues to work properly if a single fan fails.