Patent ID: 8799373

Claim:
A method for message interworking, comprising: receiving, by a Session Initiation Protocol (SIP) messaging server, an SIP message from a sender terminal, and routing the SIP message to a recipient; receiving, by the SIP messaging server, an SIP response to the SIP message; determining, by the SIP messaging server according to forwarding information preset in the SIP messaging server, that the message interworking is required when the SIP response is a failure response indicating that a target network of the recipient does not support the SIP message; sending, by the SIP messaging server, the SIP message to an interworking gateway; selecting, by the interworking gateway, a recipient terminal service; performing, by the interworking gateway, a protocol conversion on the SIP message, based on the selected recipient terminal service, to render a non-SIP message; and sending, by the interworking gateway, the non-SIP message to the non-SIP messaging system corresponding to the selected recipient terminal service.