When you come to One Source Communications about your business broadband, we can cut through the jargon and advise you about which broadband option would be the most cost effective and offer the best performance for your business.
Call us on 08442 570 111 today to speak to a member of our expert team.

Don’t know the difference between ADSL and DSL? Not sure what we mean by a leased line? Check out our quick guide to broadband below


The download speed is the speed at which files, websites and emails are downloaded onto your PC. Most people need this to be as high as possible so that any data is transferred quickly.


This is the opposite of download. Sending an email entails uploading it off your PC onto the internet, requiring upload speed. Upload becomes important if you have remote workers connecting into your office systems because, for them to download the data from the server, it will need to be uploaded from the office first. In this type of situation, it is always the upload speed that is the bottle neck.

Contention Ratio

This is the number of other connections on the exchange that you are sharing with other users. Imagine the local telecoms exchange has a capability of 8mb download; this 8mb has to be shared out between all the connections that go to other businesses or homes, so the contention ratio is the number of businesses and homes that are sharing the 8mb connection. Typically for a home user connection, this figure is 50:1. If we do the maths, this means 50 people sharing 8mb, which equates to 0.16mb download each or 160kb. Now it is unusual for all 50 to be using the internet at the same time, unless it is a residential area and the kids are off school. So you tend not to notice that your speed is low, because there might only be 30 people at the same time giving you more of the share each. For business connections the ratio tends to be 20:1 or lower.</p>


This is the standard form of Broadband that comes into your building via a phone line (an analogue phone line). The service comes in a number of formats, ADSL, ADSL2+ and ADSL2+M (known as Annex M). The difference is the speed: the older ADSL is limited to a maximum of 8mb download and an upload of a maximum of 832KB (0.8mb); with ADSL2+, the maximums are increased up to 24mb download with 1.3mb upload. Annex M increases the upload to 2.5mb with the download remaining at 24mb maximum. The maximum speeds are dependent on the distance between you and the telecoms exchange that your ADSL is coming from – the further the distance, the slower the actual speed because the system is running on copper cables and the ADSL signal degrades over distance. Different providers also use different contention ratios.

As a home user, you could be on a 50:1 ratio; businesses tend to be put on to a 20:1 ratio, but only if you have a business ADSL package (don’t buy a home service for your business).


This is the same as ADSL except it comes from fibre cables in the ground rather than copper, typically supplied by Virgin Media, NTL, Cable and Wireless, etc. As there are no restrictions with the signal being lost over the distance of cable, speeds tend to be a lot higher and more consistent. Typically download speeds start around 10mb and can go up to 150mb for domestic as well as business users.


This type of broadband would be your choice if upload is as important (if not more so) as download, so if you were a business with remote workers you might go for SDSL. SDSL has the same download and upload values, so a 1mb download would have an upload of 1mb. Unfortunately, you can only get up to 2mb upload/download at present. If you need more than 2mb speeds in either direction, you need to look for an alternative type of Broadband or connect a number of them together, called bonding.

Fibre Broadband

You can now benefit from even faster internet connectivity with our new range of fibre-based broadband packages. Fibre broadband enables you to achieve download speeds of up to 80mbps with a choice of up to 2mbps or up to 20mbps upload, enabling you to do more with your broadband connection.

Fibre Broadband can provide these significantly faster speeds because it uses fibre from the core network to the street cabinets and then copper from the cabinet to your premises.

Fibre broadband is often referred to as ‘super-fast broadband’ or ‘next-generation broadband’ as it offers faster speeds than have been available to date using older generation networks.

Types of Fibre Broadband

There are generally two types of broadband connections that use fibre – FTTC (Fibre to the Cabinet) and FTTP (Fibre to the Premises).

Fibre to the Cabinet (FTTC)

Fibre to the Cabinet (FTTC) involves running fibre optic cable from the telephone exchange to the street cabinets. These then connect to a standard phone line. From the street cabinet standard copper cable is then used to the premises.

FTTC Diagram








Fibre to the premises (FTTP)

Fibre to the premises (FTTP) provides an end-to-end fibre optic connection the full distance from the exchange to the building and can deliver faster speeds than FTTC as there is no copper cable limiting it.


FTTP Diagram








Leased Line

This is the big Daddy of Broadband. With a leased line you are paying for a connection that has a 1:1 ratio, which means that you are basically connected directly to the internet with speeds up to 100mb. You buy a connection which either allows a maximum of 10mb or one with a limit of 100MB, then you simply turn on the amount you want to use – 1mb, 2mb, etc. – all the way up to your maximum. The upload and download speeds are the same so there are no issues with lots of download but little upload.

Call us on 08442 570 111 today to speak to a member of our expert team about the best broadband for your business.