InaVoIPnetwork,whichthreecallsignalingprotocolsaresupportedbytheCiscoCallManagerforcallsetup,callmaintenance,andcallteardown?() A.H·323B.UDPC.RTPD.TCPE.MediaGatewayControlProtocol（MGCP）F.sessioninitiationprotocol（SIP）
InaVoIPnetwork,whichthreecallsignalingprotocolsaresupportedbytheCiscoCallManagerforcallsetup,callmaintenance,andcallteardown?()
A.H·323
B.UDP
C.RTP
D.TCP
E.MediaGatewayControlProtocol（MGCP）
F.sessioninitiationprotocol（SIP）
相关考题：
WhichstatementdescribesthedistributedcallcontrolmodelinVoIPnetworks?() A.Thegatewayvoice-capabledeviceisconfiguredtosupportcallcontroldirectlyperformingcallsetup，callmaintenance，andcallteardownB.Thegatewayvoice-capabledevicehasalocalcallroutingtableconfiguredthrougharoutingprotocol.C.Thegatewayvoice-capabledevicereliesonacallagenttosupportcallcontrol.D.Thegatewayvoice-capabledevicereliesonagatekeepertosupportcallsetup，callmaintenance，andcallteardown.