What is a benefit of Internet protocol (IP) telephony?

What is a benefit of Internet protocol (IP) telephony?

What is a benefit of Internet protocol (IP) telephony?

A.
synchronizes password exchanges for call setup

B.
eliminates the need for physical cabling in a TCP/IP network

C.
enables two-way voice transmission over a packet-switched TCP/IP network

D.
creates an encrypted tunnel for voice through a Transmission Control Protocol (TCP)/IP network



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