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Standards for MM COMM

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Standards for MM COMM

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    1. 1 Standards for MM COMM

    2. 2 Interpersonal

    3. 3 Interactions over the Internet

    4. 4 Entertainment

    5. 5 Protocol Basics

    6. 6 A/V Conferencing in Circuit-mode Networks

    7. 7 Audio-Visual Conferencing Standards in Circuit-mode Network

    8. 8 T.120: Standards for User Data App. Media types T.124: sharing of text for what is known as text char T.126: still-image and whiteboard sharing T.127: sharing of file contents T.128: sharing of text documents and spreadsheets Communications T.122: MCU procedures T.125: MCS procedures T.123: a series of network-specific transport protocols all of which provide a reliable transport service

    9. 9 Multiplexing Multiplexing of audio, video, and data streams together for transmission over the network H.221 TDM: fixed portions of bandwidth are allocated H.223

    10. 10 System Control H.242 Negotiation of the bandwidth/bit-rate to be used for each stream Inform the multipoint controller part of MCU of its capabilities (e.g. video format, A/V compression standards, T.120 user data applications, proposed bit rate of each channel) Then, MCU negotiates and agrees a minimum set of capabilities H.245 Exchange of messages for negotiation capabilities Opening and closing of logical channels Transmission of the contents of the multiplex table, choice of adaptation layers

    11. 11 H.323: A/V Conferencing over Packet-switched Network

    12. 12 Call Setup procedure using H.323 Gatekeeper H.323 gatekeeper Limit # of concurrent calls to provide QoS quarantee in LAN environment

    13. 13 H.323 multiplexing/demultiplexing

    14. 14 Interworking using an H.323 Gateway

    15. 15 IETF Interpersonal Communications SIP/SDP

    16. 16 E-mail over Internet SMTP, RFC 821 POP3, RFC 1939 IMAP MIME (Multipurpose Internet Mail Extensions), RFC 2045

    17. 17 Protocol Stacks for email over Internet

    18. 18 E-mail Gateway

    19. 19 Information Browsing

    20. 20 E-Commerce Network Security PKI

    21. 21 Movie/Video-on-demand: telephony

    22. 22 Movie/Video-on-demand: Cable TV

    23. 23 Interactive TV: Digital TV Video: MPEG-2 Audio: MEPG Layer 2 (PAL), Dolby AC3 (NTSC, ATV/GA)

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