Protection of Pilots and Additional Measuring Frequencies at Points Where There is a Through-Connection - International Analogue Carrier Systems (Study Group XV) 5 pp
国外标准现行
标准号:ITU-T G.243-1989
标准名称: 透明连接点导频和附加测试频率的保护 国际模拟载波系统(研究15组)5pp
英文名称:Protection of Pilots and Additional Measuring Frequencies at Points Where There is a Through-Connection - International Analogue Carrier Systems (Study Group XV) 5 pp