T.120

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Template:Use British English Template:Use dmy dates

T.120 is a suite of point-to-multipoint communication protocols for teleconferencing, videoconferencing, and computer-supported collaboration.[1] It provides for application sharing, online chat, file sharing, and other functions. The protocols are standardised by the ITU Telecommunication Standardization Sector (ITU-T).[1]

T.120 has been implemented in various real-time collaboration programmes, including WebEx and NetMeeting.[2][3] IBM Sametime switched from the T.120 protocols to HTTP(S) in version 8.5.[4]

The prefix T designates the ITU subcommittee that developed the standard, but it is not an abbreviation. The ITU (re)assigns these prefixes to committees incrementally and in alphabetic order.[5]

The T.123 standard specifies that T.120 protocols use network port 1503 when communicating over TCP/IP.[5]

Components

Number Title Status Refs
Template:Rh2 | T.120 Data protocols for multimedia conferencing In force [6]
Template:Rh2 | T.121 Generic application template In force [7]
Template:Rh2 | T.122 Multipoint communication service - Service definition In force [8]
Template:Rh2 | T.123 Network-specific data protocol stacks for multimedia conferencing In force [9]
Template:Rh2 | T.124 Generic Conference Control In force [10]
Template:Rh2 | T.125 Multipoint communication service protocol specification In force [11]
Template:Rh2 | T.126 Multipoint still image and annotation protocol In force [12]
Template:Rh2 | T.127 Multipoint binary file transfer protocol In force [13]
Template:Rh2 | T.128 Multipoint application sharingTemplate:Efn In force [14][15]
Template:Rh2 | T.130 Realtime architecture ? [15]
Template:Rh2 | T.131 Network specific mappings ? [15]
Template:Rh2 | T.132 Realtime link management ? [15]
Template:Rh2 | T.133 Audio visual control services ? [15]
Template:Rh2 | T.134 Text chat application entity In force [16]
Template:Rh2 | T.135 User-to-reservation system transactions within T.120 conferences In force [17]
Template:Rh2 | T.136 Remote device control application protocol Superseded by H.281 [18][19]
Template:Rh2 | T.137 Virtual meeting room management for multimedia conferencing audio-visual control In force [20]
Template:Rh2 | T.RES Reservation services ? [3][15]
Template:Rh2 | T.TUD User reservation ? [3][15]

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See also

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References

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External links

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  20. ↑ Script error: No such module "citation/CS1".
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