# A B C D E F G H I J K L M N O P Q R S T U V W X Y Z


H.221 is a framing recommendation and is part of the ITU-T (International Telecommunications Union-Telecommunication Standardization Sector) H.320 video interoperability standards. It specifies the framing employed during synchronous video operation over individual ISDN (Integrated Services Digital Network) B channels ganged together into a 384Kbps H0 channels.

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