Welcome to the world of VoIP

By: Jaime Valles

& Shady Mickhail

Our Presentation

Overview of VoIPHow does VoIP workDetailed ExplanationAdvantages and DisadvantagesTypes of ImplementationProductsSummary

Overview (What is VoIP?)

Voice over Internet Protocol Involves the delivery of voice information

over IP based networks. i.e. InternetUsed to transmit voice, fax, data and

multimedia all in one network

How does VoIP Work?

Sends voice information in discrete digital packets rather than sending it through the public switched telephone network (PSTN).

Takes an analogue voice signal and converts it into a digital format so that it can be delivered over an IP network. i.e. Internet.

By using a router-based gateway, a PC-based gateway, a PBX-based gateway and others it can perform the conversion from an analogue signal to a digital format.

Detailed Explanation

PSTN (Public Switched Telephone Network)– POTS based on Circuit Switching– Today it is out of date– ISP’s pay for long distance access

VoIP takes advantage of this

Detailed Explanation

IP telephony– Packet switching using H.323 Standard– Bypass the PSTN through a Gateway

• Search Function• Connection • Digitizing • Demodulation• Compression• Decompression and Remodulation

Advantages

No extra Phone ChargeAllows for multiple connections over a

single line ex. Voice, fax, data, video.Multiple users at the same time

Disadvantages

Initial set up cost Quality issues Compatibility issues

Types of Implementation

PC to Phone Service– Dialpad.com

PC to PC Service– NetMeeting

Phone to Phone Service– Telephone companies are able to reduce cost by

95% ex. Japan 29cents/minNetwork Service

Products (Beamer)

Advantages– Enables you to instantly add video to you phone calls,

simply by using your existing phone, and phone line.

– No software to install, computer not required and no service fees

Disadvantages – Sends 15 frames per second

– Actual speed is 33.6Kbps

Products (Beamer TV)

Advantages– Works with any television (NTSC format) that has a

RCA video jack. Also, easy to set up and easy to use

Disadvantages– Modem transmission speed is 33.6Kpbs.

– 4 to15 frames per second

– Retail Value for both products $149.99

http://www.vialta.com/

Summary

Positive OutlookConcerns

– Security – Bandwidth management

Advanced Technologies

Thank You!