1. VoIP
Chris King

2. What is VoIP? Voice over Internet Protocol Analog to digital
Place calls for free
Depends on type

3. Types of VoIP (not just Skype)
ATA
Analog Telephone Adaptor
Standard phone to computer
IP Phones
Specialized
Connects to router
Cable or Wi-Fi

4. Types of VoIP (Continued)
Computer to Computer
Most common
Simple to set up
Mic
Speaker
Sound card
Internet Connection

5. History of Calling Landlines Fiber Optic Dedicated lines
Copper wire until recently
Fiber Optic
Faster, more lines

6. Today: Packet Switching
Sends little chunks of data
Compression
Works like video compression
Ignores useless information
Background noise
One person talking
Dead air
Very efficient

7. Popular Programs

8. Problems with VoIP

9. Why Does it Suck Sometimes?
“Jittering”
Mismatched packet speed
Lag
Bad connection
Has to navigate firewalls
Highways vs backroads
If one suffers, both do

10. Security At basic level, less secure than landline Can be more secure
Encryption
DoS attacks
Programs like WireShark can eavesdrop convos
Can be more secure
(S)Vo(S)IP
Difference is where encryption takes place

11. Sources
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