标准摘要
[中文适用范围]： 用于数据终端设备（DTE）和数据电路终端设备（DCE）或并行自动呼叫设备（ACE）之间的接口。 [外文原描述]： Specifies the 25-pin connector and assignment of connector pin number at the interface between data terminal equipment and data circuit-terminating equipment or automatic calling equipment. Applicable to voice band modems, public data network facilities, telegraph signal converters, and automatic calling equipment where CCITT Recommendations V.24 and V.28 are valid.
英文名称Information technology — Data communication — 25-pole DTE/DCE interface connector and contact number assignments