Abstract: A system for interworking messages of a mobile communications terminal employs a method of receiving by a first messaging service server a multimedia message sent by a first user client of a first messaging service, processing the multimedia message at the first messaging service server and at a second messaging service server, and providing by the second messaging service server the processed multimedia message to a second user client of a second messaging service. The message includes a parameter that indicates the originating messaging service type or the recipient messaging service type as a field or an indicator in the header portion or body portion of the message.

Abstract: A system and method for making a multimedia message service compatible with a non-supported multimedia message terminal. The system comprising a first system for converting a format of a multimedia message and transmitting a uniform resource locator and an access code of the converted multimedia message in response to a receiving terminal being detected as the non-supported multimedia message terminal. A second system for receiving the converted multimedia message, and transmitting the uniform resource locator and the access code to the non-supported multimedia terminal. The non-supported multimedia terminal receives the converted multimedia message.