WhichdeviceisnormallyusedtotranslatetelephonenumbersornamestoIPaddressesforcallroutinginanH.323network?()A.callagentB.IPphoneC.multipointcontrolunitD.gatekeeper
题目
WhichdeviceisnormallyusedtotranslatetelephonenumbersornamestoIPaddressesforcallroutinginanH.323network?()
A.callagent
B.IPphone
C.multipointcontrolunit
D.gatekeeper