POINT-TO-POINT CHAT METHOD AND SYSTEM

The present invention discloses a point-to-point chat system and method. The system comprises a USSD (Unstructured Supplementary Service Data) signaling interface unit and a chat control unit. The USSD signaling interface unit is configured to receive a USSD chat request message of an inviting party and a USSD chat joining message of an invited party via a core network, and to forward the USSD chat request message and the USSD chat joining message to the chat control unit. The chat control unit is configured to send a chat inviting message to the invited party after receiving the USSD chat request message, to start the chat after receiving the USSD chat joining message, and to receive chat information of the inviting party or the invited party to forward to the other party of the inviting party or the invited party. The present invention makes full use of advantages of the USSD technology and effectively reduces the cost, and its application mode is very flexible.