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

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

For which service is SS7 responsible?

Through which protocols can VPNs be implemented at layer 2?

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

Which are examples of CCS?

Minimum bandwidth required for VoIP to deliver high quality services?

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

What do you call a medium which allows multiple channels?

Which are the major VoIP protocols?

One of the most important things common in all IP phones?