GB/T 17904.1-1999
ActiveISDN user-network interface data link layer specification and conformance testing method--Part 1:User-network interface data linklayer specification
ISDN用户-网络接口数据链路层技术规范及一致性测试方法 第1部分:用户-网络接口数据链路层技术规范
Application Summary AI generated
This standard specifies the data link layer protocol for the ISDN user-network interface, defining frame structures, procedures, and error handling for reliable communication. It is applied in telecommunications equipment and network systems to ensure consistent implementation of the ISDN D-channel link access protocol (LAPD). The standard is used by engineers and testers for developing, integrating, and verifying ISDN terminal equipment and network interfaces.
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