An ITU standard for real time data conferencing (sharing data among multiple users). It defines interfaces for whiteboards, application viewing and application sharing. The ITU standards for videoconferencing are H.320 and H.323. Following are all the elements of T.120.
T.121 - Generic Application Template
Common structure for T.120 applications.
T.122 - Multipoint Communication Service
Service definition for T.123 networks (implemented in T.125).
T.123 - Audiovisual Protocol Stacks
Protocol stacks for terminals and MCUs.
T.124 - Generic Conference Control
Conference management (establish, terminate, etc.).
T.125 - Multipoint Communication Service
Protocol implementation of T.122.
T.126 - Still Image & Annotation Protocol
Whiteboards, graphic display and image exchange.
T.127 - Multipoint Binary Transfer
Protocol for exchanging binary files.
T.128 - Audio Visual Control
Interactive controls (routing, identification, remote control, source selection, etc.)
T.130 - Real Time Architecture
Interaction between T.120 and H.320.
T.131 - Network Specific Mappings
Transport of real time data used with T.120 over LANs.
T.132 - Real Time Link Management
Creation and routing of real time data streams.
T.133 - Audio Visual Control Services
Controls for real time data streams.
T.RES - Reservation Services
Interaction between devices and reservation systems.
T.Share - Application Sharing Protocol
Remote control protocol.
T.TUD - User Reservation
Transporting user-defined data.
T.121 - Generic Application Template
Common structure for T.120 applications.
T.122 - Multipoint Communication Service
Service definition for T.123 networks (implemented in T.125).
T.123 - Audiovisual Protocol Stacks
Protocol stacks for terminals and MCUs.
T.124 - Generic Conference Control
Conference management (establish, terminate, etc.).
T.125 - Multipoint Communication Service
Protocol implementation of T.122.
T.126 - Still Image & Annotation Protocol
Whiteboards, graphic display and image exchange.
T.127 - Multipoint Binary Transfer
Protocol for exchanging binary files.
T.128 - Audio Visual Control
Interactive controls (routing, identification, remote control, source selection, etc.)
T.130 - Real Time Architecture
Interaction between T.120 and H.320.
T.131 - Network Specific Mappings
Transport of real time data used with T.120 over LANs.
T.132 - Real Time Link Management
Creation and routing of real time data streams.
T.133 - Audio Visual Control Services
Controls for real time data streams.
T.RES - Reservation Services
Interaction between devices and reservation systems.
T.Share - Application Sharing Protocol
Remote control protocol.
T.TUD - User Reservation
Transporting user-defined data.
 | Reproduced with permission from Computer Desktop Encyclopedia. Copyright (c) 1981-2008 The Computer Language Company Inc. All rights reserved. |
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