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Voice over Internet Protocol (VoIP)

Discover how VoIP revolutionizes communication by allowing phone calls over the internet, saving money, integrating with other applications, and offering flexibility and unique features. Explore the impact of VoIP on business culture and the challenges faced in terms of service quality, bandwidth, power, and security.

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Voice over Internet Protocol (VoIP)

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  1. Voice over Internet Protocol (VoIP) MIS 304 December 3, 2009 Presented by group 7 : Cassie Macapinlac, Jolly Phan Thomas Cooper, Kyoung In Kim, Norinao Haruna

  2. Contents 1. Introduction 2. History of VoIP 3. Background Information 4. Benefits of Using VoIP 5. Business Culture and VoIP 6. Challenges of VoIP 7. Conclusion

  3. Introduction • Voice over Internet Protocol (VoIP) A technology that helps communications which allows consumers to make and receive phone calls over broadband internet connections instead of using typical analog telephone landlines such as PSTN.

  4. History • 1995- Vocaltec, Inc. introduced its Internet Phone software. • 2000- Networking manufacturers introduce equipment to routes and switches VoIP traffic. • 2004- Commercial VoIP services were provided over broadband internet access as a major development. • 2009- 256 million users of VoIP around the world.

  5. How It Works

  6. Three Methods of Connecting to VoIP • Analog Telephone Adapter (ATA) • VoIP phones • Computer-to-Computer

  7. Analog Telephone Adapter (ATA) • Analog to digital converter that allows you to connect standard phones to your computer or your internet connection.

  8. VoIP Phones • Which looks like an ordinary corded or cordless telephone and is dedicated as an actual phone that allow calls without using the computer

  9. Computer-to-Computer • Installed software on a computer which allows VoIP calling without a dedicated hardware.

  10. Benefits of VoIP • Save money and cost efficient • Integration with audio, data, and video applications • Flexibility • Ability to choose our own area codes • Offer features for free

  11. Benefits of VoIP • Save money and cost efficient Using VoIP, a lot cheaper than our normal landline telephone cost, be it short or long distance calls. (for use of both residence and business)

  12. Benefits of VoIP • Integration with Audio, Data, and Video Applications we can save more money and energy by using our phone while accessing all our other programs and surf the Internet at the same time

  13. Benefits of VoIP • Flexibility We can take our VoIP Adaptors anywhere and use our number anywhere there's an Internet connection(Travelling overseas, staying in hotels, etc..)

  14. Benefits of VoIP • Ability to choose our own area codes By having the ability to choose our own area code, they are able to call us and will be charged as a local call (they don’t have to pay for long distance charges).

  15. Benefits of VoIP • Offer Features for Free Features that typically cost extra with normal phones are bundled with VoIP. (features: Voice Mail, Call Forwarding, Call Waiting)

  16. Business Culture and VoIP • Culture Development or improvement of education or training. • Business Culture Refers to the punctuality, risk, power distance, making decisions, and Business Contacts of the organization.

  17. Business Culture and VoIP • Virtual work “Work performed away from the traditional physical workplace by means of information technology.”

  18. Business Culture and VoIP • VoIP affects distant communication in the business world to a more meaningful and timely direction, making the business culture communication, power distance, decision making seemingly more leisurely.

  19. Business Culture and VoIP • Advancing Technology Makes lives, in the business world, easier. • There is no long distance fees for calls either!

  20. Business Culture and VoIP • Communication brings two people together, one conveys a message and the other interprets it. • Emails are broad and do not convey a interactive message. • VoIP does convey a meaningful, interactive, imely, and relevant message.

  21. Challenges of VoIP • Level of service quality • Data travels with fixed maximum capacity • -Prone to congestion & Denial-of-Service Attacks • Quality of Service (QoS) • - Jitter • - Latency • Possible counterattacks? • -Teletraffic engineering • - Multi-path routing

  22. Challenges of VoIP • Bandwidth Difference • Bandwidth Range of frequencies through which data is transmitted. Often associated with “connection speed.” • Greater connection speed, better the quality • No internet, no phone line - Annoying at home • Catastrophic for business

  23. Challenges of VoIP • Shared connection - Multiple users = difficult to provide to adequate - Bandwidth all the time • Solution? • Minimize Internet connection usage for things other than VoIP during conversations.

  24. Challenges of VoIP • Power Differences • Susceptible to Power Failures - Modems, routers, ATA or other VoIP hardware require electric power supplies to work - Power interruptions mean no service! • Possible solution? - Use customer premise equipment (like cable modems) with battery-backed power supplies - Assures uninterrupted service for up to several hours

  25. Challenges of VoIP • Security issue • Susceptible to attack like any other internet-connected device • Hackers can -Institute denial-of-service attacks -Harvest customer data -Record conversations -Break into voice mailboxes

  26. Challenges of VoIP • Many do not support encryption • -Relatively “easy” to eavesdrop on VoIP calls and even • change their content • Possible solutions? • To protect confidential & classified conversations: • -Voice over Secure IP (VoSIP) • -Secure Voice over IP (SVoIP) • -Secure Voice over Secure IP (SVoSIP)

  27. Challenges of VoIP • Emergency call • No relationship between IP address and physical location -Address reveals no useful information for emergency services. -Cannot easily be routed to a nearby call center • IP addresses - Dynamically assigned • ISP allocates an address for online access or the time a broadband router is engaged. • ISP recognizes individual IP addresses, but not the corresponding physical location

  28. Challenges of VoIP • Possible solution? • -Use a database to find that user and the physical • address the user chose to associate with that telephone • number—imperfect solution. Ex: VoIP Enhanced 911

  29. Challenges of VoIP • Legal issue • Issues about Foreign Intelligence Surveillance Act • National Security Agency (NSA) • Federal Communications Commission (FCC) • Some places have banned ALL VoIP technologies

  30. Conclusion

  31. Question & Comments???

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