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