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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| YD/T 1172-2001 |
Access Network Technical Specification. ISDN Basic Rate Access Interface (U Interface) Specification for Remote Equipment 接入网技术要求——接入网远端设备isdn基本速率接入接口(u接口)技术要求 |
China Telecommunication
Standards Technical Specification ISDN |
 English PDF |
| YD/T 1087-2000 |
Technical Specification of ISDN User-network Interface (Supplementary Part to Support IP Access) isdn用户——网络接口规范（补充支持ip接入） |
China Telecommunication
Standards Technical Specification ISDN |
English PDF |
| YD/T 1085-2000 |
B-ISDN ATM Adaptation Layer AAL Type 2 Signalling Technical Specification(CS-1) b-isdnatm适配层aal类型2信令技术规范（能力集-1） |
China Telecommunication
Standards Technical Specification ISDN |
English PDF |
| YDN 053.1-1997 |
(B-ISDN ATM Adaptation Layer Type 1 (AAL1) Technical Specification (internal standard)) b-isdn atm 适配层类型1(aal1)技术规范 |
China Telecommunication
Standards Technical Specification ISDN |
English PDF |
| YD/T 928-1997 |
Technical specification for ISDN PABXs n-isdn第二类网络终端（nt2型）设备isdn用户交换机技术规范 |
China Telecommunication
Standards Technical Specification ISDN |
English PDF |
| YDN 034.4-1997 |
ISDN subscribers - specification for network interfaces. Part 4 Technical specifications for supplementary services (internal standard) isdn用户--网络接口规范 第4部分:补充业务技术规范 |
China Telecommunication
Standards Technical Specification ISDN |
English PDF |
| YDN 034.3-1997 |
ISDN subscribers - specification for network interfaces Part 3: Technical specifications for third-layer basic call control (internal standard) isdn用户--网络接口规范 第3部分:第三层基本呼叫控制技术规范 |
China Telecommunication
Standards Technical Specification ISDN |
English PDF |
| YDN 034.2-1997 |
ISDN subscribers - specification for network interfaces Part 2: Technical specifications for data link layers (internal standard) isdn用户--网络接口规范 第2部分:数据链路层技术规范 |
China Telecommunication
Standards Technical Specification ISDN |
English PDF |
| YDN 034.1-1997 |
ISDN subscribers - specification for network interfaces Part 1: Technical specification for physical layers isdn用户?网络接口规范 第1部分：物理层技术规范 |
China Telecommunication
Standards Technical Specification ISDN |
English PDF |
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