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H.323 Liane Tarouco Leandro Bertholdo

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H.323 Liane Tarouco Leandro Bertholdo RNP POP/RS
Videoconference solutions ,[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Videoconference with CuSeeme
Using CuSeeMe
MBone ,[object Object],[object Object],[object Object],[object Object]
Mbone tools ,[object Object],[object Object],[object Object],[object Object]
Standard entities ,[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],H.323 became popular
Videoconference topology ,[object Object],[object Object]
Point to point
Group to group
Multipoint
H.323 Architecture V.70 Terminal H.324 Terminal Speech Terminal H.322 Terminal Speech Terminal H.320 Terminal H.321 Terminal GSTN GQOS LAN N-ISDN B-ISDN H.323 MCU H.323 Terminal H.323 Gatekeeper H.323 Gateway H.323 Terminal H.323 Terminal
Standards for videoconference ,[object Object],[object Object],[object Object],[object Object],[object Object]
Available Transport Media ,[object Object]
Available Transport Media ,[object Object]
Available Transport Media. ,[object Object]
ISDN ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],USA PRI
ISDN ,[object Object],[object Object],[object Object]
ISDN for multipoint conference ,[object Object],[object Object],[object Object]
H.320 ,[object Object],[object Object],[object Object],[object Object],[object Object]
Lan & WAN ,[object Object],[object Object],[object Object],[object Object],[object Object]
Multipoint conference ,[object Object],[object Object]
Cellular Networks. ,[object Object]
Cellular networks ,[object Object],[object Object],[object Object],[object Object]
Internet, VPN & ADSL. ,[object Object],[object Object]
Directory services ,[object Object]
Videoconference over Internet ,[object Object],[object Object],[object Object],[object Object],[object Object]
Codex de Vídeo H.261 - video codec for >= 64kbps H.263 - video codec for < 64kbps Frames no formato H.261/H.263 não comprimidos Frames comprimidos Frames comprimidos Rede Digital Vídeo analógico Frames no formato H.261/H.263 não comprimidos Sistema de Captura Amostras digitais Conversor A/D Sistema de transformação de cores Sistema de redimensionamento de frames Frames modificados para exibição Sistema de Exibição Sistema de transformação de cores Sistema de redimensionamento de frames Codificador Decodificador
Video standards ,[object Object],[object Object],[object Object]
Image size ,[object Object],[object Object],[object Object],[object Object],[object Object]
Video Sizes ,[object Object],[object Object]
Video Sizes ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
PC Window Sizes ,[object Object],[object Object],[object Object],[object Object]
H.264 ,[object Object],[object Object],[object Object],[object Object]
Audio standards ,[object Object],[object Object],[object Object],[object Object],[object Object]
Audio standards ,[object Object],[object Object],[object Object]
Audio standards ,[object Object],[object Object]
Control standards ,[object Object],[object Object],[object Object],[object Object]
Control standards ,[object Object],[object Object],[object Object],[object Object]
Control standards ,[object Object],[object Object]
Control standards ,[object Object],[object Object],[object Object]
Control standards ,[object Object],[object Object],[object Object],[object Object],[object Object]
Control standards ,[object Object],[object Object],[object Object]
Numbers & names ,[object Object],[object Object],[object Object]
H.323 Alias ,[object Object],[object Object],[object Object]
Q.931 ,[object Object]
What is H.323 ,[object Object],[object Object],[object Object],[object Object],[object Object]
H.323 umbrella ,[object Object],[object Object]
Elements of an H.323 System ,[object Object],[object Object],[object Object],[object Object]
Terminals ,[object Object],[object Object]
Terminals ,[object Object],[object Object],[object Object],[object Object],[object Object]
Terminals ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Terminal identification ,[object Object],[object Object],[object Object],[object Object]
H.323 User Number ,[object Object],[object Object]
Multipoint Control Units (MCUs): ,[object Object],[object Object]
MCUs ,[object Object]
MCU ,[object Object],[object Object],[object Object]
MCU ,[object Object],[object Object],[object Object],[object Object],MC MP
MCU: MC & MP ,[object Object],[object Object],[object Object],[object Object],[object Object]
Switching/mixing
MCU: MC & MP ,[object Object],[object Object]
MCU - H.320 ,[object Object]
Endpoint with Embedded MCU ,[object Object],[object Object]
Terminal & MCU ,[object Object],[object Object]
Gatekeeper ,[object Object],[object Object],[object Object],[object Object],[object Object]
Gatekeeper ,[object Object]
Gatekeeper ,[object Object],[object Object],[object Object],[object Object]
Gatekeeper ,[object Object]
Gatekeeper ,[object Object],[object Object],[object Object],[object Object],[object Object]
Gateway and zone ,[object Object]
Gatekeeper and zone ,[object Object],[object Object]
Example of gatekeepers ,[object Object],[object Object]
Example of gatekeeper ,[object Object]
Media Xchange Manager™ - VCON ,[object Object],[object Object],[object Object],[object Object]
Interconnected Gatekeeper Zones: ,[object Object]
Calling an endpoint ,[object Object]
Calling na endpoint ,[object Object],[object Object],[object Object],[object Object]
Interconnected Gatekeeper Zones:
Neighbour Gatekeepers ,[object Object],[object Object],[object Object]
Directory Gatekeepers ,[object Object],[object Object]
Directory Gatekeeper ,[object Object],[object Object],[object Object],[object Object]
Gateways ,[object Object]
Gateways ,[object Object],[object Object],[object Object]
Gateway
Gateways: ,[object Object],[object Object],[object Object],[object Object]
Gateway ,[object Object]
H.323 Stack
The Protocols ,[object Object],[object Object],[object Object],[object Object],[object Object]
Protocols ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
QoS ,[object Object],[object Object]
Data Collaboration Using T.120
Data collaboration applications ,[object Object],[object Object]
Tools for collaboration ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Videoconference needs complement for supporting collaboration:
Standards for Collaboration Services ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
ITU-T T.120 series Whiteboard Overhead Proj Photos Documents File Transfer App Sharing Reservations A/V Control Application Protocols T.126 - Still Image, T.127 - File Transfer T.130 - A/V Control, T.SHARE, T.RES T.124 - Generic Conference Control T.123 - Transport Stacks MCU T.122 / T.125 - Multipoint Comm. Service T.126 T.127 TERMINAL Switching T.130 ISDN POTS Voice/ Data LAN ATM
H.323 and T.120 components MCU - multipoint control unit contains MC and MP optionally a T.120 MCU Terminals may contain T.120 capabilities
H.323 e T.120
ITU-T T.120 series ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
ITU-T T.120 series ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Protocols T.120 ,[object Object],[object Object],[object Object]
T.124 - Generic Conference Control (GCC): ,[object Object],[object Object],[object Object]
Conformance for T.120 service ,[object Object],[object Object],[object Object]
Additional standards ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
data, video audio Applications Broadcast application Application Sharing Required services in H.323 & T.120 Teaching and learning environment
Lecture delivery performance ,[object Object]
Some monitoring results ,[object Object],[object Object],Event> Mon Nov 26 17:15:54 2001 Pkts in 25655 Pkts Event> client Leandro Bertholdo - T.120 session closed Event> Mon Nov 26 17:16:54 2001 Pkts in 27438 Pkts Event> Mon Nov 26 17:17:55 2001 Pkts in 1695 Pkts Event> client Alexei Korb timeout -- holding down Event> Mon Nov 26 17:18:55 2001 Pkts in 3324 Pkts Event> client Alexei Korb - T.120 session closed due to insufficient bandwidth Event> Mon Nov 26 17:19:56 2001 Pkts in 4708 Event> Mon Nov 26 17:20:56 2001 Pkts in 5850 Event> client Liane Tarouco - T.120 session closed due to insufficient bandwidth Event> Mon Nov 26 17:21:57 2001 Pkts in 7114 Event> Mon Nov 26 17:22:58 2001 Pkts in 8182
QoS ,[object Object],[object Object],[object Object],[object Object],[object Object]
QoS ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
MOS - Mean Opinion Scores ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

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H.323 Liane Tarouco Leandro Bertholdo

  • 1. H.323 Liane Tarouco Leandro Bertholdo RNP POP/RS
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  • 13. H.323 Architecture V.70 Terminal H.324 Terminal Speech Terminal H.322 Terminal Speech Terminal H.320 Terminal H.321 Terminal GSTN GQOS LAN N-ISDN B-ISDN H.323 MCU H.323 Terminal H.323 Gatekeeper H.323 Gateway H.323 Terminal H.323 Terminal
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  • 29. Codex de Vídeo H.261 - video codec for >= 64kbps H.263 - video codec for < 64kbps Frames no formato H.261/H.263 não comprimidos Frames comprimidos Frames comprimidos Rede Digital Vídeo analógico Frames no formato H.261/H.263 não comprimidos Sistema de Captura Amostras digitais Conversor A/D Sistema de transformação de cores Sistema de redimensionamento de frames Frames modificados para exibição Sistema de Exibição Sistema de transformação de cores Sistema de redimensionamento de frames Codificador Decodificador
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  • 96. ITU-T T.120 series Whiteboard Overhead Proj Photos Documents File Transfer App Sharing Reservations A/V Control Application Protocols T.126 - Still Image, T.127 - File Transfer T.130 - A/V Control, T.SHARE, T.RES T.124 - Generic Conference Control T.123 - Transport Stacks MCU T.122 / T.125 - Multipoint Comm. Service T.126 T.127 TERMINAL Switching T.130 ISDN POTS Voice/ Data LAN ATM
  • 97. H.323 and T.120 components MCU - multipoint control unit contains MC and MP optionally a T.120 MCU Terminals may contain T.120 capabilities
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  • 105. data, video audio Applications Broadcast application Application Sharing Required services in H.323 & T.120 Teaching and learning environment
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Editor's Notes

  1. T.120 Does file transfer and still image well Fairly widespread Inexpensive or Free Implementation Compliance Lack of industry interest in further development No support for Video or Animation Scalability Many standards in use (RTP, SMTP, etc. but not as a package)