China National Standards

China Switch ISDN user Industry Standards English PDF List

  •  China "Switch ISDN user" Industry Standards English PDF List:
    • Standard  Code Standard Title Standard Class Order
    YD/T 1062-2000 Switch ISDN user interface on line monitor function
    交换机isdn用户接口在线监测功能    		 China Telecommunication Standards
    Switch ISDN user
    English PDF

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