With __________ ,the calling user supplies the phone number of a URI,which then triggers a set of protocol interactions resulting in the placement of the call.
A)VoIP
B)PBX
C)RTP
D)SIP

Question

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The Answer of With __________ ,the calling user supplies the phone number of a URI,which then triggers a set of protocol interactions resulting in the placement of the call.
A)VoIP
B)PBX
C)RTP
D)SIP

With __________ ,The Calling User Supplies the Phone Number of a URI,which