1)TSS Trunk and Signaling Subsystem,中继线和信令子系统2)E and M Signaling System,E[线]和M[线]信令系统3)trunk signalling,中继信令4)signal relay foundation,信令中继5)wireless relay amplify system,无线中继信号放大系统6)saturation signalling system,饱和信令系统
用法和例句
The solution of short message service(SMS) for mobile number portability(MNP) based on signal relay foundation successfully implemented in many countries and areas is analysed.