What are the main sending directions of point-to-point SMS?

According to the roaming status and sending direction of users, it can be divided into China Telecom's intra/inter-network short messages, international short messages and international roaming short messages. 1. China Telecom's intra/inter-network short messages refer to point-to-point short messages sent and received between China Telecom's mobile users and China Telecom's mobile users, and between China Telecom's PHS/PSTN users and users of other operators in Chinese mainland (including users operating PHS/PSTN). 2. International SMS: refers to sending and receiving point-to-point SMS between mobile users of China Telecom and operators outside Chinese mainland. 3. Roaming out of international short messages: refers to China Telecom mobile users roaming to the mobile network of operators outside Chinese mainland to send and receive point-to-point short messages. 4. Roaming into international short messages: refers to the mobile users of operators outside Chinese mainland roaming into the mobile network of China Telecom to send and receive point-to-point short messages. For more service benefits, click on "official website" customer service 222 below to answer your questions.