China Telecom Corporation Limited, together with its subsidiaries, provides wireline and mobile telecommunications services primarily in the People's Republic of China. It offers wireline voice services, including local wireline telephone services and long distance wireline services; CDMA mobile voice services, such as local calls, domestic and international long distance calls, intra-provincial roaming, and inter-provincial roaming and international roaming; wireline Internet access services comprising dial-up and broadband services; wireless Internet access services; and wireline, Internet, and mobile value-added services. The company also provides Best Tone information services; and information technology-based integrated solutions, such as system integration, outsourcing, special advisory, information application, knowledge, and software development services. In addition, it offers managed data services that include digital data network, frame relay, and asynchronous transfer mode services for government agencies, large corporations, and institutions; and leased line services, as well as sells, repairs, and maintains customer-end equipment. Further, the company provides international telecommunications services, including lease of network equipment, international Internet access and transit, Internet data center, and mobile virtual network services in various countries, including the Asia Pacific, Europe, Africa, South America, and North America; and music production and related information, instant messenger, and e-commerce services, as well as sells telecommunications terminals and calling cards. As of December 31, 2017, it had approximately 122 million access lines in service; 134 million wireline broadband subscribers; and 250 million mobile subscribers. The company was incorporated in 2002 and is based in Beijing, the People's Republic of China. China Telecom Corporation Limited is a subsidiary of China Telecommunications Corporation.