Which of the following is one of the most important things common in all IP phones?

Which are the major VoIP protocols?

What do you call a medium which allows multiple channels?

Which method is most commonly used to remove echo in telephone networks these days?

Minimum bandwidth required for VoIP to deliver high quality services?

Which statements regarding CRTP is/are false?

VoIP runs only on the internet. It cannot run on any other network.

Through which protocols can VPNs be implemented at layer 2?

For which service is SS7 responsible?

Which are true regarding circuit-switched networks (POTS) and packet-switched networks?

Which protocol is used in a VoIP call at the application layer of the TCP/IP model?