"Green telecommunications network" is Viettel's effort to limit energy consumption, improve social responsibility, and contribute to the world's common efforts in reducing greenhouse gases and fighting climate change. climate.Viettel determined, to realize a "green network", Viettel may have to invest millions of dollars and each person will have to work harder and be more creative. “Green” is the heart of every Viettel person with his organization, his people and his country. The goal of building a green telecommunications network affirms Viettel's desire for sustainable development, putting national interests first.With that in mind, Viettel has deployed underground network to ensure urban beauty and network safety. In 2016, Viettel planned to underground 3,000 km of fiber optic cable, reduce 5% of energy from electricity, gasoline and oil throughout the network, use multi-band antennas, reduce the number of antennas on poles....Regarding solutions to modernize the network, Viettel will step by step ipize, moving towards AII-IP in 2018; using high-capacity equipment in transmission such as 100-200 Gbps DWDM/Router for the end of the intercity layer and starting to test 1 Tbps class from 2017; applying SDN/NFV virtualization technology to lower the network for the development of cloud computing applications from 2016 to the network layers; Deploying power equipment with high conversion efficiency to reduce energy consumption and industrial waste such as DC power cabinets with over 96% efficiency, Lithium batteries with long life and capacity, Chiller cooling system ; using generators with low noise and low fuel consumption, reducing emissions to the environment; limit the use of bulky antennas, increase decorative antennas in urban areas, limit cable hanging and promote undergroundization; replacing single-band antennas with multi-band antennas with automatic tilt correction, ready for 4G; maintain, consolidate, maintain the station, create space and landscape around the station, the total station is neat, green, clean, beautiful, ...For Viettel people, it is not just a story about technological solutions and technical equipment, "Green Network" first and foremost is the image of a close, sharing and for people Viettel. for society, instead of thinking about efficiency and profit.