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A dedicated access line is a direct, fixed connection between a phone or computer and a remote terminal outside the computer. For instance, a branch office might get a dedicated access line for connection to the organization's head office.
In computer networks and telecommunications, a dedicated line is a communications connection or other hardware resource dedicated to a certain application or use. This is different than a shared connection such as a telephone network or the Internet.
Dedicated access line services may not be offered by one, distinct end-to-end cable. Services do offer guarantees of stable bandwidth availability and near constant latency, which are attributes not guaranteed on more public platforms. These attributes add significant value to the price.
As more all-purpose platforms have been developed, dedicated lines have been gradually replaced with intranets and the Internet. However, dedicated lines are still used for applications where time and bandwidth are important, such as video streaming.