我国陆地公用蜂窝数字移动通信网GSM通信系统8.90MHz,采用...
Thursday, September 15, 2022
服务质量Quality of Service(简称QoS)是网络...
Thursday, September 15, 2022
Thursday, September 15, 2022
Monday, September 12, 2022
电源线应连接可靠牢固,电气接触良好,电源线外皮无破损,且接头漏铜...
Thursday, September 15, 2022
Thursday, September 15, 2022
GPRS网络CS-3编码方案2个时隙数据速率为()kbit/s。...
Thursday, September 15, 2022
Thursday, September 15, 2022
Gn接口提供PLMN内部SGSN与GGSN之间的接口,漫游情况下...
Thursday, September 15, 2022
在杆档过渡终结制作时,将光缆内的加强芯与纤芯剥离,开剥长度约为(...
Monday, September 12, 2022
用户开通IPTV一路标清业务时,一般给用户下行带宽在()左右。...
Thursday, September 15, 2022
一条由网元产生的告警,在EMS中成为()。A、“NE告警”B、“EMS告警”C、“OMC告警”D、“NMS告警”...
Friday, November 25, 2022
Thursday, September 15, 2022
Thursday, September 15, 2022
Thursday, September 15, 2022
安利MS2711D频谱仪有频谱分析仪、()两个主要应用模式。...
Thursday, September 15, 2022
江苏电信e8-c终端,远程管理的帐号/密码在登陆ITMS之后,密...
Thursday, September 15, 2022
国标规定用户线间绝缘电阻要大于()欧姆,馈电电流应不小于EMA...
Thursday, September 15, 2022
在陆地移动通信中,通常信号中值随时间的变动远小于随地点的变动,因此可以忽略慢衰落的影响,r=rL。但是在定点通信中,需要考虑慢衰落。()...
Sunday, December 25, 2022
蝶形引入光缆在光纤面板插座内采用L型快速接续的需预留余长()。...
Thursday, September 15, 2022