VoIP Services in Infocom Applications

OData support
Dr. Imre Sándor
Department of Networked Systems and Services

This document is the successor of my previous work. Last semester i was building an

internet-based telephony solution. Voice communication over IP (Internet Protocol) is

not a new service. Even i remember my first attempt to actually talk to someone over

the internet, this was in 1999. The connection was poor and the two parties often lost

their track of each other but when it was working, even background music was

discernible. The software that made this possible was Paltalk, and it’s still in business,

obviously with significant improvements since 1999. For me, that first voice transfer

was a breakthrough.

Last semester was about being able to create a PBX (Private Branch eXchange) and to

provide low-cost alternative to traditional telephony. This semester I committed myself

to improve the VoIP solution with value added services, and to integrate the PBX into

existing payment solutions.

In this thesis I’m willing to demonstrate the technical steps and the decision process

which led me to a full featured PBX solution. Of course, in the world of engineering

nothing is ever completed, there is always something to improve or fine tune. I have a

dedicated chapter to future improvements but at every step and every decision, I’ve

tried to point out several possibilities that may need to be reconsidered in the future.

I’ve dedicated a chapter for security considerations. In today’s world, security is a must

and it should be taken seriously. I have personally witnessed two break-ins into VoIP

systems and both of them could have been prevented with proper planning.

I’ve also made great efforts to balance between technical and social restrictions; this is

due to the fact that this whole system is for people to work with and they won’t use it if

they don’t like it.


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