GB/T 28503-2012 Standard PDF file download ; GB/T 28503-2012 Standard english preview version download

GB Standard Code	GB/T 28503-2012
Standard Category	China National Standards
GB Standard English Title	Technical requirements of adaptation layer of No.7 signalling interworking with IP MTP2 user adaptation layer
GB Standard Chinese Title	No.7信令与IP互通适配层技术要求消息传递部分（MTP）第二级用户适配层（M2UA）
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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