What Is Leased Line And Why It Is Used?

A leased line can provide a dependable and fast internet connection for broadband. It offers a superior option compared to regular broadband lines. These strong internet connections are rented from professional providers and provide many advantages, resulting in exceptional speed and performance for businesses. Typically, they are rented annually.

This ultimate guide to Leased Lines will help you to understand this connectivity solution and to decide whether it is right for your business.

What Is a Leased Line?

A leased line is a specific, permanent data link that provides a dependable, high-standard internet connection for businesses with high data demands. The term “leased” means that the connection is rented directly from an Internet Service Provider (ISP) to the business, providing a level of service that surpasses standard broadband. The leased line typically offers guaranteed upload and download speeds, reliability, and durability.

  1. Uncontended

A defining characteristic of leased lines is that they are exclusive connections, not shared with other clients.

  1. Symmetrical

Leased lines must be balanced, meaning they offer equal upload and download speeds.

  1. Point to point

A standard internet connection is commonly used at home, where you connect your device to the internet and start to stream, browse, or download content. However, when many people in your area are doing the same, it can lead to a slower connection due to bandwidth being shared among the users in a local region. This type of connection is referred to as “contended”.

On the other hand, leased lines establish a direct link between two points, such as the ISP and a business location. They are not shared with other users, providing a more dependable and higher-quality connection.

With a dedicated leased line, you are guaranteed the bandwidth you need and have exclusive access to it, eliminating any slowdown during peak times.

If you’re in business, you know that slow internet connections can negatively impact your operations. For example, downloading or transferring large files or conducting VoIP conference calls can be disrupted by weak internet connections.

How Do Leased Lines Work?

Leased lines utilise the same technology as fibre optic broadband. In a fibre optic leased line, data is transmitted using light pulses through a fibre optic cable. To send data, the equipment at both ends of the cable detects the presence or absence of light, which represents binary 0s and 1s. The equipment at one end turns the light on and off to encode the data, and the equipment at the other end decodes the light pattern and converts it back into binary data.

Data travels at the speed of light through fibre optic cables, making it the fastest possible transmission speed. The limiting factor for speed is typically the speed at which the equipment at both ends can transmit or recognize the light, not the physical speed of light itself.

The main difference between a leased line and other connections is that a leased line is rented exclusively to a single business, rather than shared with many others. This means that the connection to the ISP is specific to that business.

How To Compare Leased Line With Other Broadbands?

An internet connection connects two points, such as a business and its Internet Service Provider (ISP).

Standard home or business broadband is delivered from point to point but is shared among users. As a result, internet speed can be affected during periods of high demand in your local area, leading to slower page load times, interrupted video services, and longer download times.

A Stream Networks leased line utilises a fibre ethernet broadband connection, similar to traditional broadband. The key difference is that the line is rented exclusively for the use of one business and is not shared with others. This results in a dedicated connection with the entire bandwidth available for the exclusive use of the business. The contention ratio of the line is only 1, while it is much higher in other broadband solutions.

While FTTC, FTTP, ADSL, or business broadband may offer unlimited high bandwidth, it is shared among multiple users. To achieve an uncontended internet connection, a leased line is the optimal solution.

How Leased Line Can Help Your Business?


With a leased line, the likelihood of downtime is greatly reduced, many leased line providers offer a 99.9% uptime guarantee. In the rare case of a primary circuit failure, an ADSL back-up provides an alternate connection to ensure minimum interruption.


partnerships with over 30 fibre networks, allowing us to provide their clients with cost-effective broadband solutions. Their offerings are flexible and can be customised to fit the unique needs of each business.

High speeds

Enjoy premium internet service with equally fast upload and download speeds.

Security assurance

DDoS Scrubbing provides constant protection, significantly reducing the risk of cyber attacks.

24/7 support

Leased line providers offer knowledgeable and friendly support teams that are readily available to assist you with any issues that may arise, without the hassle of talking to chatbots or having to wait in long lines or be promised a call back.

Low latency

A leased line can meet the demanding needs of businesses, enabling the simultaneous and efficient running of multiple cloud-based applications, transferring large data files, and connecting remote locations.

Quality connections

Leased line connections allow businesses with multiple remote locations and hybrid work setups to seamlessly share files and communicate with each other simultaneously.


In conclusion, a leased line is a high-quality internet connection that offers a dependable, fast, and exclusive connection for businesses with high data demands. Unlike standard broadband connections, a leased line provides equal upload and download speeds, reliability, and durability. The leased line is rented exclusively from an Internet Service Provider (ISP) to the business and establishes a direct point-to-point connection, eliminating the possibility of slowdown during peak times. With a leased line, businesses can benefit from increased reliability, cost-effectiveness, high speeds, security, 24/7 support, low latency, and quality connections. If your business requires a dependable internet connection, a leased line may be the right solution for you.

Bijoy Pal

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