Question: What advantage does VoIP offer over PBX ? A . establishment of a channel between nodes prior to communication B . voice communications across networks

What advantage does VoIP offer over PBX?
A. establishment of a channel between nodes prior to communication
B. voice communications across networks without using packets
C. easy accessibility over the cloud
D. integration of voice with data
What advantage does VoIP offer over PBX? A. establishment of a

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