YD 344-1990 English PDF

US$1519.00 · In stock
Delivery: <= 6 days. True-PDF full-copy in English will be manually translated and delivered via email.
YD 344-1990: [YD/T 344-1990] Requirements for PABXs access to public telephone switching network
Status: Obsolete

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
YD 344-1990	1519	Add to Cart	6 days	[YD/T 344-1990] Requirements for PABXs access to public telephone switching network	Obsolete

Similar standards

GB/T 41301   YD/T 1730   YD/T 1548.1   YD/T 4652   YD/T 4653   YD/T 4922   

Basic data

Standard ID: YD 344-1990 (YD344-1990)
Description (Translated English): [YD/T 344-1990] Requirements for PABXs access to public telephone switching network
Sector / Industry: Telecommunication Industry Standard
Classification of Chinese Standard: M11
Word Count Estimation: 38,341
Date of Issue: 5/10/1990
Date of Implementation: 8/1/1990
Summary: This standard provides a variety of analog and digital subscriber switch, when access to the public telephone network, must be unified to follow the main electrical performance and reliability requirements. This standard applies to all types of automatic switch and the public telephone network users analog or digital program-controlled switching system interface to connect different network access relay purposes.

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