You work as a network consultant at YourDomain .com. One of your clients is considering migrating to an IP telephony solution.
What would an advantage for the client if they migrate?

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

B.
IP telephony enables two-way voice transmission over a packet-switch TCP/IP network.

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

D.
IP telephony synchronizes password exchanges for call setup