M14 通信网传输系统接口 标准查询与下载

PD 7025 AMD 1-1995 使用CCITT G.703推荐标准规定的接口在75 欧姆不对称表示的8448 K比特/秒扫描率与公共通信网非结构数字出租

This standard is about Essential requirements for terminal equipment intended for connection to unstructured digital leased circuits of the public telecommunications network using a CCITT Recommendation G.703 interface at a rate of 8448 kbit/s with a 75 ohms unbalanced presentation;Amendment 1

Essential requirements for terminal equipment intended for connection to unstructured digital leased circuits of the public telecommunications network using a CCITT Recommendation G.703 interface at a rate of 8448 kbit/s with a 75 ohms unbalanced presenta

PD 7024 AMD 1-1995 使用CCITT G.703推荐标准规定的接口在75 欧姆不对称表示的2048K比特/秒扫描率与公共通信网非结构数字租用电路终端设备相连接的基本要求

This standard is about Essential requirements for terminal equipment intended for connection to unstructured digital leased circuits of the public telecommunications network using a CCITT Recommendation G.703 interface at a rate of 2048 kbit/s with a 75 unbalanced presentation;Amendment 1

Essential requirements for terminal equipment intended for connection to unstructured digital leased circuits of the public telecommunications network using a CCITT Recommendation G.703 interface at a rate of 2048 kbit/s with a 75 unbalanced present