What is dedicated internet access (DIA)?
Dedicated internet access is a service that provides a private, high-speed and secure connection to the internet. Unlike the shared-access broadband widely available from Internet Service Providers (ISPs), DIA delivers some of the highest speeds and bandwidths, with the assurance of reliability, privacy and security. With DIA, internet traffic to and from your business does not have to share the road with millions of other users. This direct connection between your company and the network service provider is monitored in real time to block security threats.
How does dedicated internet access work?
Specialized network service providers and some ISPs deliver dedicated internet access solutions. Also called a leased line, DIA relies on a variety of connection technologies, which are usually determined by the needs of the enterprise.
The service provider will furnish specialized routers to serve as a gateway for each local area network (LAN) requiring a DIA connection. Each gateway is connected to the service provider network with a network access loop that provides an exclusive physical path, or circuit, between the user and the provider.
A dedicated port at the network service provider is used to connect to the loop. The service provider controls the connection speed and bandwidth by configuring this port in accordance with the service level agreement (SLA) in place. From there, the network service provider connects to its internet backbone and dedicated Internet Protocol (IP) addresses are assigned.
Benefits of dedicated internet access
Dedicated internet access provides numerous advantages for medium and large enterprises that require a strong and persistent connection to the internet. Bandwidth pressure is a constant concern, and the growth of cloud computing, video content and a distributed workforce have only increased the demands on the internet. Businesses have many reasons to choose dedicated internet access:
- High availability: DIA offers unsurpassed connection persistence and reliability for cloud applications. This enables smooth operation and secure access to point-of-sale, financial systems and market execution.
- Voice Over Internet Protocol (VoIP), video conferencing and other time-critical systems, DIA lowers system latency.
- Minimizing network hops: With a direct path to an Internet access point, DIA eliminates intermediate network servers between your gateway and the internet.
- Dedicated bandwidth: Since DIA does not share a connection with any other party, it delivers a minimum bandwidth without regard to network pressures created by other users.
- Speed: With speeds of up to 100 Gbps, dedicated internet access data transfer rates are a clear advantage. DIA offers symmetrical transfer rates, delivering the same speed whether uploading or downloading data.
- Privacy: DIA delivers a very high level of protection for sensitive data, which is essential for healthcare, legal and financial industries. DIA reduces threats from man-in-the-middle attacks by essentially making a physically exclusive connection to the network service provider.
- Network monitoring: Centralized threat protection provides the most substantial security by requiring all internet traffic to pass through one connection. Continuous 24/7 monitoring effectively insulates your network against data breaches.
Dedicated internet access vs. broadband
Internet service providers provide most consumer internet access using broadband technologies. Broadband systems are shared networks, often offered as a public utility to thousands or millions of customers receiving the service. Dedicated internet access differs from broadband service in that it is an internet connection intended for the exclusive use of a single customer.
In practice, broadband speeds are highly variable, with asymmetric upload and download speeds changing with external network factors. DIA has data transfer rates that maintain a minimum speed for both uploads and downloads. Broadband is far more vulnerable to cyberattacks than DIA, which provides continuous monitoring in an extra layer of threat detection. Among the most sensitive industries requiring the fast, stable and secure connections of dedicated internet access are retail, financial, healthcare and manufacturing.
Lumen is a leading global provider of scalable, secure network services for businesses of all sizes. Contact our team to learn how switching to enterprise-grade Lumen® Dedicated Internet Access can help you expand your reach.
Find out how you can help your business run at full speed with dedicated bandwidth and speeds up to 100 Gbps.
This content is provided for informational purposes only and may require additional research and substantiation by the end user. In addition, the information is provided “as is” without any warranty or condition of any kind, either express or implied. Use of this information is at the end user’s own risk. Lumen does not warrant that the information will meet the end user’s requirements or that the implementation or usage of this information will result in the desired outcome of the end user. All third-party company and product or service names referenced in this article are for identification purposes only and do not imply endorsement or affiliation with Lumen. This document represents Lumen products and offerings as of the date of issue. Services not available everywhere. Lumen may change or cancel products and services or substitute similar products and services at its sole discretion without notice. ©2025 Lumen Technologies. All Rights Reserved.