Patent ID: 8289983

Claim:
A method for use in forwarding of a multimedia messaging service (MMS) message from a first multimedia messaging service interworking gateway (MMSIG) to a second MMSIG, the method comprising the steps of: at the first MMSIG, requesting a simple message transfer protocol (SMTP) session with the second MMSIG by means of a transmission control protocol (TCP) connection; at the second MMSIG, establishing the SMTP session with the first MMSIG by means of the TCP connection; at the first MMSIG, sending a forwarding message request in which an acknowledgment request field is set to be â€œNOâ€; at the second MMSIG, sending to the first MMSIG an SMTP-interactive-status code indicative of successful receipt of the forwarding message request, and not sending any other forwarding message response to the first MMSIG, wherein the SMTP-interactive-status code indicative of successful receipt of the forwarding message request is â€œ250 OKâ€, and the forwarding message request contains the MMS message.