SHANGHAI: China Telecom, the country's largest fixed-line operator, started trials of the third-generation (3G) mobile services in Shanghai on Monday, and plans to extend the same nationwide next month.

Shanghai Telecom, China Telecom's subsidiary, said it would invest 6 billion yuan on various projects including the 2010 Expo, 3G-network construction, and enterprise services this year. About one-third of the total capital would be used for 3G network construction, said Zhang Weihua, general manger of the Shanghai-based company.

According to the operator, the speed of its code division multiple access (CDMA) 2000-based network is 3.1 megabits per second, 20 times faster than the 2G network.