Voice over Internet Protocol (VoIP) MIS 304 December 3, 2009 Presented by group 7 : Cassie...

Voice over Internet Protocol Voice over Internet Protocol (VoIP) (VoIP)

MIS 304MIS 304December 3, 2009December 3, 2009

Presented by group 7Presented by group 7

: Cassie Macapinlac, Jolly Phan: Cassie Macapinlac, Jolly Phan

Thomas Cooper, Kyoung In Kim, Norinao HarunaThomas Cooper, Kyoung In Kim, Norinao Haruna

ContentsContents

1. Introduction 1. Introduction

2. History of VoIP2. History of VoIP

3. Background Information3. Background Information

4. Benefits of Using VoIP 4. Benefits of Using VoIP

5. Business Culture and VoIP5. Business Culture and VoIP

6. Challenges of VoIP6. Challenges of VoIP

7. Conclusion 7. Conclusion

IntroductionIntroduction

• Voice over Internet Protocol (VoIP)Voice over Internet Protocol (VoIP) A technology that helps communications which A technology that helps communications which

allows consumers to make and receive phone calls allows consumers to make and receive phone calls over broadband internet connections instead of using over broadband internet connections instead of using typical analog telephone landlines such as PSTN.typical analog telephone landlines such as PSTN.

HistoryHistory

• 1995- Vocaltec, Inc. introduced its 1995- Vocaltec, Inc. introduced its Internet Phone software. Internet Phone software.

• 2000- Networking manufacturers 2000- Networking manufacturers introduce equipment to routes introduce equipment to routes

and and switches VoIP traffic. switches VoIP traffic.• 2004- Commercial VoIP services were 2004- Commercial VoIP services were

provided over broadband internet provided over broadband internet access as a major access as a major

development. development. • 2009- 256 million users of VoIP around 2009- 256 million users of VoIP around

the world. the world.

How It WorksHow It Works

Three Methods of Connecting to VoIPThree Methods of Connecting to VoIP

• Analog Telephone Adapter (ATA) Analog Telephone Adapter (ATA) • VoIP phones VoIP phones • Computer-to-ComputerComputer-to-Computer

Analog Telephone Adapter (ATA)Analog Telephone Adapter (ATA)

• Analog to digital converter that Analog to digital converter that allows you to connect standard allows you to connect standard phones to your computer or your phones to your computer or your internet connection.internet connection.

VoIP Phones VoIP Phones

• Which looks like an ordinary corded Which looks like an ordinary corded or cordless telephone and is or cordless telephone and is dedicated as an actual phone that dedicated as an actual phone that allow calls without using the allow calls without using the computercomputer

Computer-to-ComputerComputer-to-Computer

• Installed software on a computer which Installed software on a computer which allows VoIP calling without a dedicated allows VoIP calling without a dedicated hardware. hardware.

Benefits of VoIPBenefits 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

• Save money and cost efficientSave money and cost efficientUsing VoIP, a lot cheaper than our normal landline Using VoIP, a lot cheaper than our normal landline

telephone cost, be it short or long distance calls. telephone cost, be it short or long distance calls.

(for use of both residence and business(for use of both residence and business)


• Integration with Audio, Data, and Integration with Audio, Data, and

Video Applications Video Applications we can save more money and energy by using our we can save more money and energy by using our

phone while accessing all our other programs and phone while accessing all our other programs and

surf the Internet at the same timesurf the Internet at the same time


• FlexibilityFlexibility

We can take our VoIP Adaptors anywhere and use We can take our VoIP Adaptors anywhere and use

our number anywhere there's an Internet our number anywhere there's an Internet connection(Travelling overseas, staying in hotels, connection(Travelling overseas, staying in hotels, etc..)etc..)


• Ability to choose our own area Ability to choose our own area

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


• Offer Features for FreeOffer Features for Free

Features that typically cost extra with normal phones Features that typically cost extra with normal phones are bundled with VoIP.are bundled with VoIP.

(features: Voice Mail, Call Forwarding, Call Waiting)(features: Voice Mail, Call Forwarding, Call Waiting)


Business Culture and VoIPBusiness Culture and VoIP

• CultureCulture

Development or improvement of Development or improvement of education or training.education or training.

• Business CultureBusiness Culture

Refers to the punctuality, risk, Refers to the punctuality, risk, power distance, making decisions, power distance, making decisions, and Business Contacts of the and Business Contacts of the organization.organization.

• Virtual work Virtual work

““Work performed away from the traditional physical Work performed away from the traditional physical workplace by means of information technology.”workplace by means of information technology.”



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


• Advancing Technology Makes lives, Advancing Technology Makes lives, in the business world, easier.in the business world, easier.

• There is no long distance fees for There is no long distance fees for calls either!calls either!

• Communication brings two people Communication brings two people together, one conveys a message together, one conveys a message and the other interprets it.and the other interprets it.

• Emails are broad and do not convey Emails are broad and do not convey a interactive message.a interactive message.

• VoIP does convey VoIP does convey

a meaningful, a meaningful,

interactive, imely,interactive, imely,

and relevant message.and relevant message.


Challenges of VoIPChallenges of VoIP

• Level of service qualityLevel of service quality

Data travels with fixed maximum capacityData travels with fixed maximum capacity-Prone to congestion & Denial-of-Service Attacks-Prone to congestion & Denial-of-Service Attacks

Quality of Service (QoS)Quality of Service (QoS)- Jitter- Jitter- Latency- Latency

Possible counterattacks?Possible counterattacks? -Teletraffic engineering -Teletraffic engineering

- Multi-path routing - Multi-path routing

• Bandwidth DifferenceBandwidth Difference

Bandwidth Bandwidth Range of frequencies through which data is transmitted. Range of frequencies through which data is transmitted. Often associated with “connection speed.”Often associated with “connection speed.”

Greater connection speed, better the qualityGreater connection speed, better the quality No internet, no phone lineNo internet, no phone line

- Annoying at home- Annoying at home- Catastrophic for businessCatastrophic for business


Shared connectionShared connection- Multiple users = difficult to provide to adequate- Multiple users = difficult to provide to adequate- Bandwidth all the time- Bandwidth all the time

Solution?Solution?- Minimize Internet connection Minimize Internet connection

usage for things otherusage for things other than VoIP during conversations.than VoIP during conversations.


• Power DifferencesPower Differences

Susceptible to Power FailuresSusceptible to Power Failures- Modems, routers, ATA or other VoIP hardware- Modems, routers, ATA or other VoIP hardware require electric power supplies to work require electric power supplies to work - Power interruptions mean no service! - Power interruptions mean no service!

Possible solution?Possible solution?- Use customer premise equipment (like cable - Use customer premise equipment (like cable

modems) with battery-backed power supplies modems) with battery-backed power supplies - Assures uninterrupted service for up to several - Assures uninterrupted service for up to several

hourshours


• Security issueSecurity issue

Susceptible to attack like any other internet-connected Susceptible to attack like any other internet-connected devicedevice

Hackers can Hackers can -Institute denial-of-service attacks-Institute denial-of-service attacks -Harvest customer data-Harvest customer data -Record conversations -Record conversations -Break into voice mailboxes-Break into voice mailboxes


Many do not support encryptionMany do not support encryption -Relatively “easy” to eavesdrop on VoIP calls and even -Relatively “easy” to eavesdrop on VoIP calls and even change their contentchange their content

Possible solutions? Possible solutions? To protect confidential & classified conversations:To protect confidential & classified conversations: -Voice over Secure IP (VoSIP)-Voice over Secure IP (VoSIP) -Secure Voice over IP (SVoIP)-Secure Voice over IP (SVoIP) -Secure Voice over Secure IP (SVoSIP) -Secure Voice over Secure IP (SVoSIP)


• Emergency callEmergency call

No relationship between IP addressNo relationship between IP address and and physical locationphysical location -Address reveals no useful information for emergency -Address reveals no useful information for emergency services.services. -Cannot easily be routed to a nearby call center-Cannot easily be routed to a nearby call center IP addressesIP addresses

- Dynamically assigned - Dynamically assigned - ISP allocates an address for online access or the ISP allocates an address for online access or the

time a broadband router is engaged. time a broadband router is engaged. - ISP recognizes individual IP addresses, but not the ISP recognizes individual IP addresses, but not the

corresponding physical locationcorresponding physical location


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


• Legal issueLegal issue

Issues about Foreign Intelligence Surveillance ActIssues about Foreign Intelligence Surveillance Act

National Security Agency (NSA)National Security Agency (NSA)

Federal Communications Commission (FCC)Federal Communications Commission (FCC)

Some places have banned ALL VoIP technologiesSome places have banned ALL VoIP technologies


ConclusionConclusion

Question & Comments???Question & Comments???

Voice over Internet Protocol (VoIP) MIS 304 December 3, 2009 Presented by group 7 : Cassie...

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