GB/T 28505-2012 Standard PDF file download ; GB/T 28505-2012 Standard english preview version download

GB Standard Code	GB/T 28505-2012
Standard Category	China National Standards
GB Standard English Title	Technical specification of national No.7 signaling system 2Mbit/s high speed link
GB Standard Chinese Title	国内No.7信令方式技术要求 2Mbit/s高速信令链路
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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