Nokia and WorldLink are upgrading a 650km long backbone network to provide super-fast broadband service for its customers. This will be Nepal's first 100G optical network. It stretches from Kathmandu to Bhairahawa and Birgunj, and provides international connectivity between Nepal and other. KATHMANDU, Feb 27: Subisu, a leading internet service provider in Nepal, has deployed key products from Nokia's optical portfolio to expand into new markets and provide improved quality of services to its subscribers. The ISP first partnered with Nokia in May 2018 in order to boost its FTTH deployment.