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Leased Line

A leased line is defined as a private dedicated connection between the service provider and a single site for data and voice communication requirements.

Leased lines provide your business with the ultimate in broadband connectivity. Providing 1:1 contention they are not shared or contended with other businesses ensuring you get consistent high capacity bandwidth connection. As well as offering 1:1 contention the speeds are symmetrical giving equal upload and download bandwidth unlike with ADSL or FTTx the upstream and download speeds are the same. This can open up options to use your connections for more applications based in the cloud which help reduce IT operating costs as well as flexibility for mobile devices.

KNL provide and manage sites with leased lines from various service providers, ensuring premium connections, competitive prices with 24/7 support, as not all service providers have a point of presence in all locations.

We also provide similar products that can be classed as leased line but have limitations such as Ethernet First Mile (EFM) and General Ethernet Access (GEA)

Do I need a leased line?

Many businesses will be satisfied with a standard ADSL, fibre optic or cable broadband connection but leased lines are there for when your requirements go beyond the capabilities of consumer-level services. Is it the right choice for your organisation?


A key advantage of leased lines for business is that the connection will either have a very low contention ratio or be uncontended, so you’re not sharing it with many (or any) other users. This heavily reduces or eliminates the impact of peak time traffic, ensuring a steady performance at any time of the day.

Faster upload speeds

Upload speeds are often overlooked for home broadband as it’s not all that important to average users, but businesses which may need to regularly transfer large amounts of data will find it useful to have a link that’s fast in both directions. Leased lines are often symmetrical - meaning they offer the same upload and download speed - but are flexible if you require more upstream capacity.

Superior support

Round the clock support with a guaranteed uptime and response time mean you should never be left without connectivity for long, and in the event that something does go wrong you may be able to claim compensation.

Raw speed

If you need the very fastest internet then the sky’s the limit when it comes to leased lines. Dedicated fibre optic broadband with speeds far in advance of mainstream services can be yours, provided you’re willing to pay.

A wired leased line is a dedicated data connection for your sole use which provides a guaranteed level of performance and support, aimed at businesses which need a highly reliable service.

A leased line is not a specific type of broadband technology, it can use the copper telephone network for a basic service or an advanced fibre optic connection providing incredible ultrafast performance. The speed of leased lines varies depending on what you need and how much you’re willing to pay.

Entry level leased line services may use either the older Symmetric Digital Subscriber Line (SDSL) or, more commonly now, Ethernet in the First Mile (EFM). With SDSL you’re limited to a top speed of 2Mb, while EFM can provide a connection of around 35Mb.

Faster leased line broadband services will use fibre optic connections and can provide fast performance in the gigabits-per-second range, but at higher cost. A middle ground may be the leased line services of providers like Virgin Media Business, where you can take advantage of their cable broadband network to get much faster connectivity than is available using BT based solutions, without the price becoming too excessive.

A leased line is a dedicated link for your business or shared around a building, it can be a dedicated cable or wireless link to the service provider. Selection of this type of connection is typically for high capacity or security requirements, read more!

 Types of Leased Line


A typical solution for leased line is to install fibre connections into the premises, this fibre can be capable of delivering Gigabit bandwidth but selection of bandwidth and initial installation costs require careful consideration.

Typical specifications for fibre leased lines

  • 1Mb - 10Gbps bandwidth
  • 1:1 Non-Contended, exclusive use of bandwidth not shared
  • Symmetrical, upstream and downstream bandwidths the same
  • No Data Cap, unlimited data usage
  • Service Level Agreement (SLA) 4 hour fix aim
  • Contract length, typically 1,3 or 5 years
  • Cost, varies dependent up bandwidth, contract length and installation
  • Static IP, supplied as standard
  • Monitoring, support monitor connection 24/7
  • Redundant backup option, provides high resilience for critical services


KNL can provide wireless leased lines offer our customers Internet access with capacities from 1Mbps up to 2Gbps. As these systems do not depend on third party providers, you can rest assured that our wireless final-mile delivery liberates customers from dependency on third-party fibre exchanges, offering secure connections to any number of sites based on a simple pricing structure that is competitive.

Typical Wireless Leased Line Specification

  • 1Mb - 2Gbps bandwidth
  • 1:1 Non-Contended, exclusive use of bandwidth not shared
  • 100% independence from third-party exchanges
  • 99.95% uptime guarantee
  • Guaranteed 4-hour fix time
  • Typically a 20 day delivery period
  • Small fixed installation fee that is not at risk of returning hidden excess construction charges
  • Site re-location flexibility
  • Scalability
  • Encrypted connection, preventing eavesdropping

Multi-Tennant Systems

On some sites it is possible to provide a leased line which can then be shared out between different organisations, sharing a premium connection with resilience and service level management creating a lower cost connection for businesses with corporate level service response.

KNL have provided and operate sites with a multi tenant leased line solution, if you are interested please contact us.


Remote assistance? If you have internet connection we can access your device securely


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