通信设备用直流远供电源系统
DC remote feeding power system for telecommunication equipment

2017-04-12

Essential requirements for terminal equipment intended for connection to digital leased circuits of the public telecommunications network using a CCITT Recommendation X.21bis interface
使用CCITT建议X.21bis接口连接到公共电信网络数字租用电路的终端设备的基本要求

1995-01-15

Environmental Engineering (EE); Monitoring and Control Interface for Infrastructure Equipment (Power, Cooling and Building Environment Systems used in Telecommunication Networks); Part 8: Remote Power Feeding System control and monitoring information model
环境工程；基础设施设备（电信网络中使用的电力、冷却和建筑环境系统）的监控接口；第8部分:远程供电系统控制和监控信息模型

2009-09-01

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
使用CCITT建议G.703接口以8448 kbit/s速率连接到公共电信网络非结构化数字租用电路的终端设备的基本要求

1994-11-15

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 34368 kbit/s with a 75 Ω unbalanced presentation
使用CCITT建议G.703接口以34368 kbit/s速率连接到公共电信网络非结构化数字租用电路的终端设备的基本要求

1994-11-15

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 ω unbalanced presentation
使用CCITT建议G.703接口以2048 kbit/s速率连接到公共电信网络非结构化数字租用电路的终端设备的基本要求

1994-11-15