What does telecommunications do?

Hello, the business scope of China Telecom includes basic telecom services: 1. (1) Class I basic telecommunication services: fixed communication services: 1, fixed-line local telephone services (including local wireless loop services), 2. Fixed network domestic long-distance telephone service. Fixed network international long distance telephone service. IP telephone service (telephone-telephone telephone service only), 5. International. (2) Cellular mobile communication service: 1, 800MHzCDMA second generation digital cellular mobile communication service; 2.CDMA2000 third generation digital cellular mobile communication service. 3.LTE fourth generation digital cellular mobile communication service (TD-LTE). (3) Category I satellite communication service: 1, satellite mobile communication service; 2. Satellite international dedicated line service. (4) A class of data communication services: 1, Internet data transmission services, etc.