Voice Over Internet Protocol (VoIP) allows users to make voice calls over the internet instead of traditional phone lines. It works by converting voice signals into data packets that are transmitted over broadband internet and reassembled at the destination. While it began in 1995, VoIP grew rapidly such that revenues were estimated at $8.5 billion by 2008 as quality issues were addressed. VoIP requires broadband internet, a microphone and speakers, and software. Its advantages include very low costs and the ability for libraries to use it easily. However, it may require training and can have interruptions due to broadband connections. Related future technologies discussed include mobile VoIP and transitioning to all-IP networks.

1. Voice Over Internet Protocol
Adrián González
Carlos Jeffery
Marcelo Baca
a00755834
a01185483
a00755139

2. History
• First started in Israel in 1995.
• In 1998 less than 1% US phonecalls used VoIP.
• By the year 2008, there is an estimate that the
revenues are 8.5 billion dollars from VoIP
equipment.
• The quality issues were adressed by
prioritizing voice over traffic.

3. How does it work?
• Communication over the internet with the
desired people.
• Translates voice signal
into data packages.
• Gateway used to connect
to PSTN
(public switched telephone
network).

4. Examples
•
•
•

5. Requirements
• Broadband Internet
• Microphone (and speakers)
• Very low, almost every library is able to use
VoIP
• VoIP Software

6. Advantages
• Very low cost (or even free)
- There are many open source programs.
- There are many freeware programs.
• Most libraries are able to use VoIP
• Allows voice chat with customers.

7. Disadvantages
• May require (extra) training.
• Allows voice chat with customers.
• Due to the broadband connection
services it may have interruptions.

8. Related and Future Technologies
1. The Growth of Mobile VoIP
2. Transitioning to the All IP Network

9. Related and Future Technologies
3. BYOD VoIP Fraud
4. VoIP in the Cloud

10. References
• http://computer.howstuffworks.com/iptelephony5.htm
• http://www.transnexus.com/index.php/is
sue-5-january-2013/four-voip-trends-towatch-for-in-2013
• http://www.fcc.gov/guides/voice-overinternet-protocol-voip