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White Paper K700
19 February 2004
Architecture
The MMS Centre (MMS-C) is comprised of the
MMS Server, the MMS Proxy-Relay and the MMS
Store. The MMS Centre is the central element of
the MMS network architecture, providing storage
and operational support, enabling instant delivery
of multimedia messages from terminal-to-terminal
and terminal-to-e-mail, and supporting flexible
addressing. The centre’s MMS Proxy-Relay
interacts with the application being run on the
MMS-enabled terminal to provide various
messaging services. WAP or http is used as the
bearer of an MMS message between the MMS-C
and the MMS client (application). The WAP
Gateway is used for delivery and retrieval of
messages. Information is read in the WAP browser.
Message conversion
The MMS-C is able to perform limited message
conversion - for example, from MMS to SMS - so
that processing and air time is not wasted in
sending messages to mobile terminals that do not
have adequate capability to receive them. It also
handles service aspects such as store and forward,
guaranteed delivery, subscriber preferences,
operator constraints, and billing information. The
MMS-C also vouches for high quality messaging,
for example by format conversion. This means that
the MMS-C recognizes which formats are
supported in the mobile phone, and adapts the
MMS messages to these formats.
Figure 1. The architecture of MMS