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Content for TR 24.880 Word version: 8.2.0

1… 4…

4 Media server control protocol study items p. 9

4.1 Introduction p. 9

4.2 Controlling of Media Server vs controlling of Media Resource Function p. 9

4.3 Choice of the mechanism and transport channel for media server control p. 9

4.3.1 Delegation model p. 9

4.3.1.1 New reference point: Sr p. 11

4.3.1.2 Mid-call XML support p. 11

4.3.1.3 Example p. 11

4.3.1.4 Properties p. 13

4.3.2 Protocol model with dedicated control channel p. 14

4.3.2.1 New reference point: Cr p. 16

4.3.2.2 Example p. 17

4.3.2.3 Properties p. 19

4.3.3 RFC 4240 (Netann) support p. 19

4.3.4 Mid-call XML support p. 19

4.3.5 Conferencing examples p. 20

4.4 AS and MRFC functional split for conferencing p. 20

4.4.1 Functional split between the AS and MRFC p. 22

4.5 AS programming and service implementation impacts on media server control p. 24

4.6 Packages, registration and extensibility p. 25

4.7 MRFC acting as an RTSP client p. 25

4.8 MRFC interacting with external media server p. 25

4.9 Recommendations p. 25

5 MRFC deployment scenarios p. 27

5.1 Introduction p. 27

5.2 Using different ASs to invoke, control and service the MRFC p. 27

5.3 AS in one network controlling an MRFC in a different network p. 28

5.4 Several ASs controlling one MRFC, one AS controlling several MRFCs p. 29

5.5 Core Network elements other than the AS invoking MRFC media processing capabilities p. 30

5.6 Intermediary broker function between AS and MRFC p. 30

5.6.1 General p. 30

5.6.2 Architecture Requirements p. 30

5.6.3 Architecture Alternatives p. 31

5.6.4 Architecture analysis p. 33

5.6.4.1 AS resource requests to MRB p. 33

5.6.4.2 MRB knowledge of MRF resource-related information p. 33

5.6.4.3 Other Application Considerations p. 33

5.6.5 Conclusion p. 33

5.7 Functionality of media resource composition p. 34

5.8 Recommendations p. 34

6 Relevant Specifications p. 35

6.1 Introduction p. 35

6.2 Standards and draft standards p. 35

6.2.1 VoiceXML p. 35

6.2.2 CCXML p. 36

6.2.3 SCXML p. 37

6.2.4 Explanation of Mp interface p. 38

6.2.4.1 Introduction p. 38

6.2.4.2 Main Characteristics p. 38

6.2.4.3 Example p. 39

6.3 RFC's p. 40

6.4 Informational RFC's p. 40

6.4.1 RFC 4240 ('netann') p. 40

6.4.2 RFC 4722 ('MSCML') p. 41

6.5 Internet-drafts p. 43

6.5.1 SIP Interface to VoiceXML Media Services p. 43

6.5.2 Media Server Control Requirements Draft p. 44

6.5.3 SIP control framework and packages p. 45

6.6 Others p. 46

7 Requirements for a media server control protocol p. 46

7.1 Introduction p. 46

7.2 Multimedia services' media control requirements p. 46

7.3 Response time requirements p. 48

7.4 Packaging, registration and extensibility requirements p. 49

7.5 Charging requirements p. 49

7.5.1 General p. 49

7.5.2 Mr interface p. 49

7.5.3 Sr and Cr interfaces p. 50

7.6 Resource Management requirements p. 50

7.7 High Availability requirements p. 50

7.8 QoS control requirements p. 50

7.9 Security requirements p. 51

7.10 Lawful intercept requirements p. 51

7.11 Priority requirements p. 51

7.12 Other requirements p. 51

$ Change history p. 52