EIA 449:1977被替代
General Purpose 37 Position And 9 Position Interface For Data Terminal Equipment And Data Circuit Terminating Equipment Employing Serial Binary Data Interchange
出版：JEDEC Solid State Technology Association
专家解读视频
Applies to the interconnection of data terminal equipment (DTE) and data circuit terminating equipment (DCE) employing serial binary data interchange with control information exchanged on separate control circuits. Defines signal characteristics, interface mechanical characteristics, functional description of interchange circuits, and standard interfaces for selected communication system configurations. Primarily intended for data applications using analog telecommunications networks. Also contains recommendations and explanatory notes, as well as a glossary of terms.
