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Index H.320

H.320 is an umbrella recommendation by the ITU-T for running Multimedia (Audio/Video/Data) over ISDN based networks. [1]

17 relations: Codec, G.711, G.722, G.723.1, G.728, G.729, H.261, H.262/MPEG-2 Part 2, H.263, H.264/MPEG-4 AVC, H.323, H.324, H.331, Integrated Services Digital Network, ITU-T, Narrowband, Videotelephony.


A codec is a device or computer program for encoding or decoding a digital data stream or signal.

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G.711 is an ITU-T standard for audio companding.

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G.722 is an ITU-T standard 7 kHz Wideband audio codec operating at 48, 56 and 64 kbit/s.

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G.723.1 is an audio codec for voice that compresses voice audio in 30 ms frames.

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G.728 is an ITU-T standard for speech coding operating at 16 kbit/s.

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G.729 is a royalty-free narrow-band vocoder-based audio data compression algorithm using a frame length of 10 milliseconds.

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H.261 is an ITU-T video compression standard, first ratified in November 1988.

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H.262/MPEG-2 Part 2

H.262 or MPEG-2 Part 2 (formally known as ITU-T Recommendation H.262 and ISO/IEC 13818-2, also known as MPEG-2 Video) is a video coding format developed and maintained jointly by ITU-T Video Coding Experts Group (VCEG) and ISO/IEC Moving Picture Experts Group (MPEG).

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H.263 is a video compression standard originally designed as a low-bit-rate compressed format for videoconferencing.

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H.264/MPEG-4 AVC

H.264 or MPEG-4 Part 10, Advanced Video Coding (MPEG-4 AVC) is a block-oriented motion-compensation-based video compression standard.

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H.323 is a recommendation from the ITU Telecommunication Standardization Sector (ITU-T) that defines the protocols to provide audio-visual communication sessions on any packet network.

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H.324 is an ITU-T recommendation for voice, video and data transmission over regular analog phone lines.

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H.331 is part of the ITU suite of standards for Video Teleconferencing.

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Integrated Services Digital Network

Integrated Services Digital Network (ISDN) is a set of communication standards for simultaneous digital transmission of voice, video, data, and other network services over the traditional circuits of the public switched telephone network.

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The ITU Telecommunication Standardization Sector (ITU-T) is one of the three sectors (divisions or units) of the International Telecommunication Union (ITU); it coordinates standards for telecommunications.

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In radio, narrowband describes a channel in which the bandwidth of the message does not significantly exceed the channel's coherence bandwidth.

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Videotelephony comprises the technologies for the reception and transmission of audio-video signals by users at different locations, for communication between people in real-time.

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[1] https://en.wikipedia.org/wiki/H.320

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