YD/T 937-1997 English PDF

US$489.00 · In stock
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YD/T 937-1997: Confidentiality system for audiovisual services

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
YD/T 937-1997	489	Add to Cart	3 days	Confidentiality system for audiovisual services

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Basic data

Standard ID: YD/T 937-1997 (YD/T937-1997)
Description (Translated English): Confidentiality system for audiovisual services
Sector / Industry: Telecommunication Industry Standard (Recommended)
Classification of Chinese Standard: M19
Word Count Estimation: 14,118
Date of Issue: 11/28/1997
Date of Implementation: 4/1/1998
Adopted Standard: ITU-T H.233-93, IDT
Summary: This standard specifies the confidential section applies to the business secrets of narrowband audio systems, audio-visual services in line with its narrow-band ITU-TH. 221, H. 230 and H. 242 recommendations. Although such systems require a secret encryption algorithm, but are not described in detail the contents of this standard algorithm. Such a system can meet more than one specific algorithm. Security system applied to-point link between two terminals or a terminal and multi-point control device (MCU) between. It can be extended to multi-point MCU decryption not work, but progress remains to be studied.

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