ITU-T H-Series Recommendations
(last updated: 31-Oct-2000 11:25)
H Series: Audiovisual and Multimedia Systems
Characteristics of Transmission Channels Used for Other Than Telephone
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H.11 (10/84)
Characteristics of circuits in the switched telephone network.
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H.12 (10/84)
Characteristics of telephone-type leased circuits.
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H.13 (11/88) (same as O.71)
Characteristics of an impulsive noise measuring instrument for
telephone-type circuits.
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H.14 (10/84)
Characteristics of group links for the transmission of wide-spectrum
signals.
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H.15 (10/84)
Characteristics of supergroup links for the transmission of
wide-spectrum signals.
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H.16 (10/84) (same as O.72)
Characteristics of an impulsive-noise measuring instrument for wideband
data transmission.
Use of Telephone-Type Circuits for Voice-Frequency Telegraphy
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H.21 (10/84)
Composition and terminology of international voice-frequency telegraph
systems.
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H.22 (10/84)
Transmission requirements of international voice-frequency telegraph
links (at 50, 100 and 200 bauds).
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H.23 (10/84)
Basic characteristics of telegraph equipments used in international
voice-frequency telegraph systems.
Telephone Circuits or Cables Used for Various Types of Telegraph
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H.32 (11/88) (same as R.43)
Simultaneous communication by telephony and telegraphy on a
telephone-type circuit.
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H.34 (10/84)
Subdivision of the frequency band of a telephone-type circuit between
telegraphy and other services.
Telephone-Type Circuits Used for Facsimile Telegraphy
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H.41 (1984)
Phototelegraph transmissions on telephone-type circuits.
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H.42 (1984)
Range of phototelegraph transmissions on a telephone-type circuit.
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H.43 (11/88) (same as T.10)
Document facsimile transmissions on leased telephone-type circuits.
Characteristics of Data Signals
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H.51 (11/88) (same as V.2)
Power levels for data transmission over telephone lines.
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H.52 (10/84)
Transmission of wide-spectrum signals (data, facsimile, etc.) on
wideband group links.
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H.53 (10/84)
Transmission of wide-spectrum signals (data, etc.) over wideband
supergroup links.
Characteristics of Visual Telephone Systems
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H.100 (11/88)
Visual telephone systems.
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H.110 (11/88)
Hypothetical reference connections for videoconferencing using primary
digital group transmission.
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H.120 (03/93)
Codecs for videoconferencing using primary digital group transmission.
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H.130 (11/88)
Frame structures for use in the international interconnection of digital
codecs for videoconferencing or visual telephony.
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H.140 (11/88)
A multipoint international videoconference system.
Infrastructure of Audiovisual Services - General
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H.200 (03/93)
Framework for Recommendations for audiovisual services.
Transmission Multiplexing and Synchronization
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H.221 (05/99)
Frame structure for a 64 to 1920 kbit/s channel in audiovisual
teleservices.
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H.222.0 (02/00) + Ammend 7 (02/00)
Information technology - Generic coding of moving pictures and
associated audio information: Systems.
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H.222.1 (03/96)
Multimedia multiplex and synchronization for audiovisual communication
in ATM environments.
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H.223 (03/96) + Annex A (02/98) + Annex B (02/98) + Annex C (02/98)
+ Annex D (05/99)
Multiplexing protocol for low bit rate multimedia communication.
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H.224 (02/00)
A real time control protocol for simplex applications using the
H.221 LSD/HSD/MLP channels.
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H.225.0 (09/99)
Call Signaling Protocols and Media Stream Packetization for Packet Based
Multimedia Communications Systems.
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H.226 (09/98)
Channel Aggregation Protocol for Multilink Operation on Circuit-Switched
Networks.
Systems Aspects
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H.230 (05/99)
Frame-synchronous control and indication signals for audiovisual systems.
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H.231 (07/97)
Multipoint control units for audiovisual systems using digital channels
up to 1920 kbit/s.
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H.233 (07/95)
Confidentiality system for audiovisual services.
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H.234 (11/94)
Encryption key management and authentication system for audiovisual
services.
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H.235 (02/98)
Security and Encryption for H-Series (H.323 and Other H.245-Based)
Multimedia Terminals.
Communication Procedures
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H.242 (05/99)
System for establishing communication between audiovisual terminals
using digital channels up to 2 Mbit/s.
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H.243 (02/00)
Procedures for establishing communication between three or more
audiovisual terminals using digital channels up to 1920 kbit/s.
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H.244 (07/95)
Synchronized aggregation of multiple 64 or 56 kbit/s channnels.
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H.245 (02/00)
Control protocol for multimedia communication.
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H.246 (02/98) + Annex C (02/00)
Interworking of H-Series Multimedia Terminals with H-Series Multimedia
Terminals and Voice/Voiceband Terminals on GSTN and ISDN.
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H.247 (09/98)
Multipoint Extension for Broadband Audiovisual Communication Systems and
Terminals.
Infrastructure of Audiovisual Services -- Transmission Multiplexing and
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H.248 (06/00)
Control Protocol for Multimedia Communication
aka Gateway Control Protocol.
Coding of Moving Video
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H.261 (03/93)
Video codec for audiovisual services at p x 64 kbit/s.
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H.262 (02/00)
Generic Coding of Moving Pictures and Associated Audio Information: Video.
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H.263 (02/98) + Addend (03/97)
Video coding for low bit rate communication.
Related Systems Aspects
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H.281 (11/94)
A far end camera control protocol for videoconferences using H.224.
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H.282 (05/99)
Remote Device Control Protocol for Multimedia Applications.
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H.283 (05/99)
Remote Device Control Logical Channel Transport.
Systems and Terminal Equipment for Audiovisual Services
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H.310 (09/98) + Corr 1 (02/98)
Broadband audiovisual communication systems and terminals.
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H.320 (05/99)
Narrow-band visual telephone systems and terminal equipment.
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H.321 (02/98)
Adaptation of H.320 visual telephone terminals to B-ISDN environments.
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H.322 (03/96)
Visual telephone systems and terminal equipment for local area networks
which provide a guaranteed quality of service.
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H.323 (09/99) + Annex E (05/99) + Annex F (05/99) + Annex G (02/00)
Packet Based Multimedia Communication Systems.
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H.324 (02/98) + Annex F (09/98) + Annex G (02/00)
Terminal for low bit rate Multimedia Communication.
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H.331 (03/93)
Broadcasting type audiovisual multipoint systems and terminal equipment.
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H.332 (09/98)
H.323 Extended for Loosely Coupled Conferences.
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H.341 (05/99)
Multimedia Management Information Base.
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H.450.1 (02/98)
Generic Functional Protocol for the Support of Supplementary Services
in H.323.
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H.450.2 (02/98)
Call Transfer Supplementary Service for H.323.
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H.450.3 (02/98)
Call Diversion Supplementary Service for H.323.
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H.450.4 (05/99)
Call Hold Supplementary Service for H.323.
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H.450.5 (05/99)
Call Park and Call Pickup Supplementary Services for H.323.
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H.450.6 (05/99)
Call Waiting Supplementary Service for H.323.
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H.450.7 (05/99)
Message Waiting Indication Supplementary Service for H.323.
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H.450.8 (02/00)
Name Identification Supplementary Service for H.323.
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Supplement 1 to Series H (05/99)
Application Profile - Sign Language and Lip-Reading Real-Time Conversation
Using Low Bit-Rate Video Communication.