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YD/T 521-1992 English PDF

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YD/T 521-1992: Test method of digital exchange analog interfaces and test method of transmission characteristics between (2-wire or 4-wire) analog interfaces
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YD/T 521-1992English909 Add to Cart 5 days [Need to translate] Test method of digital exchange analog interfaces and test method of transmission characteristics between (2-wire or 4-wire) analog interfaces   YD/T 521-1992

PDF similar to YD/T 521-1992


Standard similar to YD/T 521-1992

GB/T 41301   YD/T 1730   YD/T 1548.1   YD/T 4815   YD/T 4829.1   YD/T 2892   

Basic data

Standard ID YD/T 521-1992 (YD/T521-1992)
Description (Translated English) Test method of digital exchange analog interfaces and test method of transmission characteristics between (2-wire or 4-wire) analog interfaces
Sector / Industry Telecommunication Industry Standard (Recommended)
Classification of Chinese Standard M15
Word Count Estimation 26,269
Date of Issue 1/25/1992
Date of Implementation 10/1/1992
Summary This standard specifies the method for digital switch between analog ground door-wire analog interface test methods and sometimes four-wire transmission characteristics of the test. This standard applies to digital switch identification, acceptance and maintenance testing.

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