By Bert Sparks


As a consumer it is frequently easy to be puzzled by all the jargon associated with all the current technical terms that are in usage. A good example of this difficulty is the number of ways available to connect to broadband such as SDSL internet. Precisely what is this and how does it function? Following are some notes aimed at clarifying this for non-technical readers.

The abbreviation means Symmetric Digital Subscriber Line. Translated this means internet connections capable of higher speeds appropriate for users with higher bandwidth needs. Or in other words people or organizations who move large volumes of data on the internet. Business broadband SDSL is very suitable for those who use sites that stream data and voice over internet protocol like internet oriented phone and video services.

An additional benefit of this form of connection is that it makes server hosting possible. Even though it is advisable to check the anticipated amount of transactions a site may be required to perform so as not to compromise performance. This type of connection is aimed at creating a favorably priced option for some users not at replacing a larger capacity T1 type service. Particular attention must be paid if the user is operating commercial sites where users are sensitive to speed and may easily search elsewhere if unsatisfied.

One of the main attractions of having this facility is because it provides the same data uploading and downloading speeds. This is in contrast to DSL, a straight forward digital subscriber line. This is where confusion can arise because this is a similar type of service but differs in that it provides fast data download but slower data upload speeds. This option is more suitable for home or small business use where the directional bias is towards incoming data.

Contention is a term which one might hear when discussing broadband connections. This refers to the clash between information required to move up or down the connection. Using a symmetric connection there is no clash and thus no contention, so it will not be a constraining issue. This is true even if lines are very active with many users. In a straight comparison a symmetrical line will always be faster.

The more basic DSL service discussed above is usually also split by means of a filter, to provide analogue services to subscribers such as for a phone or a fax machine. The symmetrical type of service makes use of a dedicated line which is another advantage when it comes to speeds and response times as the user is able to make full use of the available bandwidth. Having a dedicated line might sound expensive, however, the cost should still be less than a typical T1 type service.

Generally the speeds available will depend on the distance between the user and their nearest hub or switch. Occasionally the nature of the copper line and the use of some telecommunications devices may cause limitations. It could also mean that this service is not available in all areas, so it is wise to check before signing up to a subscription or spending on new modems or routers.

Hopefully this narrative will go some way to clearing up some of the misunderstandings about SDSL and empower users to be more knowledgeable when deciding which type of connection best suits their needs.




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