2.2 Voice Networks (PSTN, Cellphone Networks, & Satellite)

What does PSTN stand for?

• Public Switched Telephone Network
• Private Switched Telephone Network
• Public Switched Telecommunication Network
• Private Switched Telecommunication Network

What is PSTN primarily used for?

• Data transfer
• Video calls
• Voice calls
• Internet browsing

Where are PSTN cables commonly found?

• Underwater
• On telephone poles
• Inside homes
• Inside computers

What type of network is PSTN?

• Wireless
• Wired
• Hybrid
• Optical

How long has PSTN been around?

• Over 50 years
• Over 75 years
• Over 100 years
• Over 150 years

What type of phones does PSTN typically use?

• Mobile phones
• Satellite phones
• Landline phones
• Internet phones

What is a major limitation of PSTN?

• High cost
• Limited range
• Lack of reliability
• Lack of flexibility

Why is PSTN considered reliable for audio quality?

• It uses advanced technology
• It is wireless
• It has been refined over time
• It is inexpensive

When is PSTN expected to be phased out in the UK?

• 2023
• 2024
• 2025
• 2026

What is expected to replace PSTN?

• DSL
• VoIP
• Fiber-optic
• Cellular networks