共找到 295 条与 物理层 相关的标准,共 20 页
Information technology-Data communication-15-pole DTE/DCE interface connector and contact number assignments
? ??? ? ?? ?? ?? ??? ??? ?? ?? ?? ??? ??? ??? ???
Information technology-Galvanic isolation of balanced interchange circuits
Automatic fault isolation procedures using test loops
Information technology-Galvanic isolation of balanced interchange circuits
Information processing systems-Information exchange between systems-Synchronous transmission signal quality at DTE/DCE interfaces
Information technology-Galvanic isolation of balanced interchange circuits
Information technology-Telecommunications and informationexchange between systems-NFCIP-1-Protocol Test Methods
DTE to DTE physical connection using X.24 interchangecircuits with DTE provided timing
1.1 ? ??? ????? ??? ??? ?? ?? ??(DTE)? ??? ?? ??(D
Information technology-Telecommunications and informationexchange between systems-Start-stop transmission signalquality at DTE/DCE interfaces
? ??? 34? ???? ITU-T ?? V.35 ?? ?? V.10, V.11? ??
Information technology-Telecommunications and informationexchange between systems-34-pole DTE/DCE interface connectormateability dimensions and contact number assignments
Information technology-Telecommunications and informationexchange between systems-NFCIP-1-Protocol Test Methods
Information technology-Open Systems Interconnection-Physical service definition
Information technology-Data communication-37-pole DTE/DCE interface connector and contact number assignments
Information technology-Data communication-15-pole DTE/DCE interface connector and contact number assignments
Information technology-Telecommunications and information exchange between systems-Twisted pair multipoint interconnections
Information technology-Telecommunications and informationexchange between systems-34-pole DTE/DCE interface connectormateability dimensions and contact number assignments
Information technology-Open Systems Interconnection-Physical service definition
? ??? ??? X.24, X.26 ? X.27? ???? ??? ?? ?? ??(DTE
Information technology-Data communication-15-pole DTE/DCE interface connector and contact number assignments
DTE to DTE physical connection using X.24 interchangecircuits with DTE provided timing
DTE/DCE interface back-up control operation using the 25-pole connector
Copyright ©2007-2022 ANTPEDIA, All Rights Reserved
京ICP备07018254号 京公网安备1101085018 电信与信息服务业务经营许可证:京ICP证110310号