Patent ID: 8917836

Claim:
A method for implementing information exchange comprising the following steps of: a calling user terminal sending information to be sent to a called user terminal by carrying the information in a user-to-user signaling (UUS) field of a call message; the called user terminal sorting out the information carried in the UUS field from the call message after receiving the call message, and feeding back a message other than an acknowledge message to the calling user terminal; and the calling user terminal terminating the present call procedure after receiving the message which has been fed back by the called user terminal, wherein, the calling user terminal sends the information to be sent to the called user terminal through one or more call messages; after sorting out the information carried in the UUS field, the called user terminal also judges whether the information is complete or incomplete; the message other than an acknowledge message is a message containing a UUS field, and the called user terminal carries a judging result in the UUS field in the message that is fed back; if the information is judged to be incomplete, then after receiving the message which has been fed back by the called user terminal, the calling user terminal continues to send a subsequent part of the information to be sent to the called user terminal through a UUS field of a subsequently sent call message.