Traditionally video conference equipment has utilised ISDN services which more often than not is a dedicated service provided by Telstra which has high rental and call costs.
The benefit of ISDN is its reliability of service, and if you intend to use your video conferencing for mission critical events than ISDN should definitely be considered as a primary or secondary network.
IP networks are now at the stage of being able to provide the bandwidth and low latency requirements that are needed for video conferencing. Because video conferencing is about the transmission of video and audio in real time, latency issues can adversely affect performance to the point that the call is unacceptable or can't be maintained.
When using IP networks for video conference equipment, it is recommended that you utilise a business grade service and that the service can support the required bandwidth including data overheads. This can cost even more than ISDN depending on the service and so a feasibility study should be conducted.
Utilising IP networks does have its shortfalls and one of those is the ability to connect to an external site. For example, if you were a law firm that used videoconferencing between your offices, you would find that your videoconferencing would work fine, especially if you are utilising an existing Enterprise grade Wide area Network between your offices. However if you were to call an external client who also has video conferencing equipment you might find that their internet service provider does not provide a very good pipe (Connection) to your provider and you may experience latency (length of time it takes for data to arrive) and bandwidth (The amount of data you can send) issues.
This is where an ISDN service works extremely well as it is what is called a switched network with a guaranteed level of service.
Rabone Systems has extensive experience with video conference equipment and can provide you with the correct answers so you can make the right decision.
Article Source: http://EzineArticles.com/?expert=Byron_Rabone
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