Operator MMSC without a WAP Gateway (ICAP)

When implementing an MMSC for a mobile operator network, one of the most confusing concepts is how user authentication is usually performed in conjunction with a WAP Gateway. MMS uses the MM1 Protocol (OMA MMS Encapsulation) for transactions between a mobile device and the MMSC. This protocol does not define how the MMSC identifies and authenticates the subscriber when the MMS client on a mobile...

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