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YDJ20-1988 PDF English

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YDJ20-1988: Temporary Technical Regulation for Installation Design of Computerized Telephone Exchange Equipment
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Std IDVersionUSDBuyDeliver [PDF] inTitle (Description)
YDJ 20-1988English1799 Add to Cart 8 days [Need to translate] Temporary Technical Regulation for Installation Design of Computerized Telephone Exchange Equipment

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Basic data

Standard ID YDJ 20-1988 (YDJ20-1988)
Description (Translated English) Temporary Technical Regulation for Installation Design of Computerized Telephone Exchange Equipment
Sector / Industry Telecommunication Industry Standard
Classification of Chinese Standard M40
Word Count Estimation 56,562
Date of Issue 8/23/1988
Date of Implementation 3/1/1989
Regulation (derived from) Current effective communication standard catalog Communications Development Division (2009. 1)
Summary This standard applies to new local and long-distance telephone telephone switching equipment installation design, expansion, renovation project fully consider the characteristics of the original equipment, rational use of existing facilities on the basis of reference to the implementation of this standard.

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