Introduction to Telephony and VoIP

What significant event in telephony happened in 1876?

• A) Expansion of telephone networks

• B) Invention of the Telephone

• C) Introduction of rotary dial

What was the first VoIP software launched in 1995?

• Skype

• InternetPhone

• SIP

The significance of VoIP in the 2020s is:

• Increased communication flexibility and reduced costs

• Decreased internet usage

• Limited to personal use only

• Obsolete technology

Why is VoIP important?

• It reduces communication costs.

• It increases communication costs.

• It has no impact on communication costs.

• It complicates communication.

The difference between SIP and VoIP is:

• SIP is a protocol used for initiating, maintaining, and terminating real-time sessions, while VoIP refers to the technology that allows voice communication over the internet.

• SIP and VoIP are the same and can be used interchangeably.

• SIP is a hardware device, while VoIP is a software application.

• SIP is used for video conferencing, while VoIP is used for voice calls only.

The role of SDP in SIP is to:

• establish a session between two parties

• describe multimedia sessions

• provide security features

• handle user authentication

Which protocol does SIP use for real-time transport?

• RTB

• RTP

• SRTP

• RPT

SIP is applied in:

• telecommunications for voice and video calls

• financial transactions for secure payments

• data encryption for secure communication

• cloud storage for data backup

The role of a User Agent (UA) in SIP is to:

• initiate and terminate sessions

• route calls between networks

• provide encryption for messages

• manage network traffic

True or False: UAC is the logical entity that generates a response to a SIP request.

• True

• False