Conference Call Conference Call Technology & Tools

Question 1

Which protocol is most commonly used to transmit voice data over the internet in conference calls?

Accepted Answer

VoIP

Answer

VoIP (Voice over Internet Protocol) converts audio into data packets transmitted over the internet for conference calls.

Question 2

What does the acronym PSTN stand for in the context of conference calling?

Accepted Answer

Public Switched Telephone Network

Answer

PSTN stands for Public Switched Telephone Network, the traditional landline phone infrastructure used for dial-in conferencing.

Question 3

What is a conference bridge in telephony?

Accepted Answer

A device or service that connects multiple callers into a single call

Answer

A conference bridge is a device or cloud service that merges multiple incoming phone lines into a single shared audio session.

Question 4

Which audio codec is widely considered high-definition (HD) quality in modern conference call platforms?

Accepted Answer

Opus

Answer

The Opus codec supports wideband and fullband audio, making it the preferred HD voice codec in modern conferencing platforms.

Question 5

What is the primary purpose of echo cancellation technology in conference calls?

Accepted Answer

To remove the speaker's own voice from their microphone pickup

Answer

Echo cancellation filters out the feedback loop caused when a microphone picks up audio from a nearby speaker.

Conference Call Practice Test