New T&T, the telecommunications offshoot of Wharf (Holdings), has opened its second switching centre in an investment worth more than $100 million. The centre, situated in Tsuen Wan, should allow the company to double its network capacity to about 100,000 lines. The equipment was supplied by Canadian firm Northern Telecom, which also built the company's first centre in Kwun Tong. New T&T has sold about 22,000 lines and says it has a network second only to Hongkong Telecom in terms of geographical extent. The company said it had installed about 95 km of backbone optic-fibre cables in Mass Transit Railway tunnels and an additional 250 km had been installed in buildings. The extra capacity afforded by the new switching centre should also allow the network to perform more robustly, an important factor for demanding customers such as banks and brokerages, a spokesman said. New T&T president Leslie Harris said the firm had spent $1 billion on developing its network and planned to invest $6.5 billion. The company said its customer base for discounted long-distance calls, mainly using call-back, had grown to 230,000 subscribers.