Install electromechanical, analog and digital trunking systems, circuits and equipment in telecommunications central offices and switchingcentres.
在电信中心办公室和交换中心安装工机电,模拟和数字集群系统,电路和设备。
2
This Recommendation contains the principles and examples of Signalling between the International SwitchingCentres (ISC) and their associated circuit multiplication equipments.