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Please click the appropriate heading below to take you to the relevant section of information. What does ADSL stand for? Can I get ADSL? What do I need? How does ADSL work? Can I take my ADSL connection with me if I move premises? Can I have ADSL if I have already got an ISDN line? What services on my line are incompatible with ADSL? What does ADSL stand for? ADSL stands for Asymmetric Digital Subscriber Line. The term 'asymmetric' is used as the upstream connection (from your computer to the Internet) and the downstream connection (from the Internet to your computer) are different. Back To Top Can I get ADSL? In order to be provided with ADSL you need to have a standard BT telephone line* and it must be connected to an ADSL enabled exchange. Not all telephone exchanges are enabled at present, however, to check if you are able to receive ADSL via your local exchange please click here. If ADSL is not available in your area this does not mean that you cannot benefit from broadband services, please click here for further details. Back To Top *Please note that even if you are billed for your telephone call charges by another provider you may still have a BT phone line. You phone provider will be able to advise you if you are unsure. Back To Top What do I need? As well as a standard BT telephone line and an ADSL enabled local exchange you will need to make sure that: You have a compatible ADSL modem or Router You continue to pay your line rental to BT for the telephone line Your equipment is no more than 30 meters away from the master BT socket (although cables supplied by us are usually no more than 2 meters) Back To Top How does ADSL work? ADSL uses ordinary copper wire telephone lines to distribute digital information. Because the phone line is split by a Micro-filter*, digital data is sent across a higher frequency and the voice data across a lower frequency. This means that the digital data can be moved more quickly than with a standard dial-up connection which uses the lower frequency transmission. *Please note that a Micro-filter will need to be installed on all extensions that ADSL is enabled on. Back To Top Can I take my ADSL connection with me if I move premises? The ADSL connection we provide you with is linked to the telephone line you apply for the service on. If you move there is no guarantee that you will be able to receive ADSL in the location you move to. However, if you do move to an area where ADSL is available then you can still continue to receive the service but you will have to pay for the service to be set up again. Back To Top Can I have ADSL if I have already got an ISDN line? If you wish to replace ISDN with ADSL then you will need to get your ISDN line converted back to analogue or have a new analogue line installed. We can arrange for the ISDN line to be converted to an analogue line at a charge of £42.55 exe VAT and will appear on your bill. If your line is technically not able to have ASDL once the conversion has taken place, the engineer will convert the line back to ISDN and ALL charges are dropped. Back To Top What services on my line are incompatible with ADSL? Subscriber Private Metering 30k Loop Private Circuits ISDN - All types Home Highway or Business Highway (unless a conversion is carried out to PSTN with ADSL order) Red ABC RedCare FeatureNet 5000 services PBX and AUX lines Caller Display Unit - CD50 This is not an exhaustive list but the ones that BT are aware of. Back To Top