ADSL – What is ADSL?

ADSL is an abbreviation of asymmetric digital subscriber line – which basically refers to broadband through a telephone line.

Unlike dial-up, which uses the phone line to make a connection, ADSL actually works alongside the frequencies used for voice telephone calling, therefore allowing you to continue to make phone calls while using the internet. It enables faster data transmission through a single connection, but allows users to download data and make voice calls or send faxes at the same time.

The distinguishing factor of ADSL is that the flow of data is greater in one direction than it is in the other – hence the name ‘asymmetric’. This is why download speeds are far greater than upload speeds. Consequently, ADSL broadband is usually marketed towards passive internet customers who rely on downloads but have little emphasis on uploads. The average top speeds for downloads are usually 8Mb, and the top speeds for uploads are usually below 1Mb, please click this link if you would like to run a speed test on your ADSL  service.

With recent advances in technology you now find that ADSL services are used as a back up connection should the primary faster service such as a FTTC connection or a dedicated EFM connection suffer a serivce issue.

ADSL broadband is widely available in the UK – with coverage accessible for more than 99% of the UK population. As such, the majority of businesses in the UK have ADSL primary or secondary connections.

To make your ADSL connection work effectively you will need an ADSL modem and micro-filters that will be supplied by RJ Cortel. The micro-filters prevent crackling on your phone line while you are using the internet. If you require more than one or two, then please inform RJ Cortel of this and we will send the required amount out to you.

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