GB/T 9541-1988 Standard PDF file download ; GB/T 9541-1988 Standard english preview version download

GB Standard Code	GB/T 9541-1988
Standard Category	China National Standards
GB Standard English Title	2400 bits per second duplex modem using the echo cancellation technique standardized for use on the general switched telephone network and on point-to-point 2 wire leased telephone-type-circuits
GB Standard Chinese Title	在普通电话交换网和点对点二线租用电话型电路上使用标准化的回波抵消技术的2400比特/ 秒双工调制解调器
Chinese Version Price	$15 USD per 50 pages
English Translation Price	About $15 per 1 page; Inquire us for detail price

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