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从１９８８年起，邮电部第五研究所开始ＳＤＨ系统的开发。最近该所又用３年时间，同中国邮电工业总公司合作开发了６２２Ｍｂｉｔ／ｓ和１５５Ｍｂｉｔ／ｓ两个速率级的全套设备（包括ＴＭ、ＡＤＭ、中继机）和ＦＰ１．０版的网元管理系统。本文将介绍开发的背景和产品开发的成果
Since 1988, the Fifth Institute of the Ministry of Posts and Telecommunications started the development of the SDH system. Recently, it took another three years to jointly develop a full set of equipment (including TM, ADM and repeater) of 622Mbit / s and 155Mbit / s rates with China National Posts and Telecommunications Corporation and FP1.0 network element Management system. This article describes the development background and product development