What is a dedicated line used for specific point-to-point communications also known as?

A dedicated line used for specific point-to-point communications is referred to as a hotline. This type of communication line is established for urgent or prioritized exchanges of information, typically where clarity and reliability are essential, such as in emergency services or direct communications between specific agencies. Hotlines are designed to ensure that communication can occur without interference or delays, differentiating them from other types of communication channels that may have multiple users or purposes.

In contrast, a private line usually indicates a dedicated circuit for a particular organization but may not be exclusively for urgent communications. A call center typically refers to a facility used for receiving or transmitting a large volume of calls, often managing a range of inquiries rather than being a dedicated line for instant, critical communications. A shared line indicates that multiple parties have access and can use the communication line simultaneously, which would not suit the specific needs for urgent and direct communication that a hotline provides.