The MMSC External Application Interface subsystem enables external applications to communicate with the Multimedia Messaging Service Center to send and receive Multimedia Messages. The communication between the external applications and the EAIF is carried over the HTTP 1.1 protocol with some MMS-specific extensions. See [1] to get more information about EAIF. The message format used in Multimedia Messaging Service is specified by the WAP Forum in specification WAP-209-MMSEncapsulation. See [2] to get more information about the format and structure of multimedia messages.

Nokia EAIF-EM is a tool, which enables application developers to test applications without a live connection to the MMSC. Nokia EAIF-EM provides the basic functionality of external application interface by simulating the functionality of MMSC and EAIF. The EAIF-EM also provides basic capabilities for sending/receiving MMS messages. The EAIF-EM enables application developers to verify the message format and sending/receiving capability of applications before connecting the applications to a live MMSC.

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