Monthly Archives: November 2009

Support Advisory

Due traffic restrictions resulting from the CHOGUM Summit, from November 26th – 27th, please be advised that only remote support  will be available to our valued clients located within Port of Spain. SMB wishes to apologize for any inconvenience resulting from this as we seek to provide you with the best possible service and support.

 

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Introduction to VoIP (Voice over Internet Protocol)

Hi everyone and welcome back. In this issue, we are taking a look at VoIP (Voice over Internet Protocol), how it began and where it is today.  Don’t forget to check out our Quick tips as well, with some handy shortcuts using the windows key.  

VoIP is probably something you have heard about if you are keen of new computer technologies.  VoIP allows telephone calls over the internet and due to the constantly improving internet connections; it has started to replace traditional phone networks.  VoIP is mainly used by businesses as they are more likely to have access to fast internet connections, needed by this type of telephony.

History

This idea dates back in 1995 and was started by an Israeli computer enthusiast who managed to establish the first phone call between two computers.  Later that year, a software package called Internet Phone Software was developed and released and it was essential for a VoIP connection.  VoIP users needed this software, a modem, sound card, microphone and speakers to be able to use Voice over Internet Protocol.

The Principles behind VoIP

voipIn order to be able to send your voice over the internet, it has to be transformed into digital data.  The digitalization process is called ‘sampling’ and involves ‘breaking’ the sound into very small pieces that can be characterized by a number value.  After this process has ended, the digital result is compressed and divided into small 1500 bytes packets that will be sent over the internet.  Packets contain not only the voice but also data regarding their order needed for a correct reconstruction and data about their origin.  Once the packets have reached the destination they will be reconstructed and the resulting digital data will be transformed back into analogue sound and played by the speakers.

A broadband connection is required due to the large amount of data that has to be transmitted over the internet in a short time to avoid noticeable delays.

The Protocol today

There are many VoIP services available today, suiting any type of needs.  While some are still computer dependent, phone-to-phone and PC-to-phone services are also available.

Although special USB compatible internet phones were developed, the computer can be completely bypassed by internet phones that link directly to a cable or DSL broadband connection via a modem.

For further information on this system, you can contact us here.

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