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2.4.2.3
 
IP Carrier Access Network 
The TMMS Client and the TMMS Proxy-Relay communicates through a CAN. 
2.4.2.4
 
Web server 
For interoperability with GSM SMS, where media type is restricted to text, a web server 
is used to deliver the multimedia message. This is described in use case UP11 in Table 
2-4. 
2.4.2.5
 
Message store 
The MS is used to store incoming messages. This can be a relational database. 
2.4.2.6
 
User store 
TMMS PR needs to keep track of the users it's responsible for, so only authorized users 
can access the service. 
There are several solutions available for this. For example a relation database can be used 
or a directory service. Especially if integrating the service into an enterprise’s network it 
will be necessary to integrate the service with the enterprise’s directory service. 
2.4.2.7
 
Streaming media server 
When the TMMS MS is requested to stream a multimedia message back to the client it 
uploads the message to a streaming media server and directs the client to use that.

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2.4 Background information: : Case description: TMMS Service 
Page 16 of 93 
Except for the design based on IMS, which uses a standard IMS component, the 
streaming media server can be any Commercial Off The Shelf (COTS) streaming media 
server can be used. The only requirement for the streaming media server is that it must 
support the Real Time Streaming Protocol (RTSP) [12]. 
2.4.3
 
Component view
In the following figure the components which TMMS Service is dependent on depicted.
Figure 2-16 Component view of TMMS Service 
The Application Server package is an abstraction of the hosting environment where the 
TMMS PR will be deployed. An example of such an environment is a SIP AS in IMS. 
In the following subsection the internal components of TMMS Client is described.