Interfaces
- MM1: the 3GPP interface between MMS User Agent and MMS Center
- MM2: the 3GPP interface between MMS Relay and MMS Server
- MM3: the 3GPP interface between MMS Center and external servers
- MM4: the 3GPP interface between MMS Centers
- MM5: the 3GPP interface between MMS Center and HLR
- MM6: the 3GPP interface between MMS Center and user databases
- MM7: the 3GPP interface between MMS VAS applications and MMS Center
- MM8: the 3GPP interface between MMS Center and the billing systems
- MM9: the 3GPP interface between MMS Center and an online charging system
- MM10: the 3GPP interface between MMS Center and a message service control function
- MM11: the 3GPP interface between MMS Center and an external transcoder
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