What is an “out of band” communication?

The concept of “out of band” communication refers specifically to the use of a separate frequency channel that is distinct from the primary data or control channel. This method is often employed to ensure that certain types of communication can occur without interference from the main communication lines. For instance, out of band communication can facilitate secure transmissions, maintenance procedures, or system updates even if the primary channel is congested or compromised.

This separation enhances security and reliability, because it allows critical information to be transmitted without being affected by regular data traffic. It plays a crucial role in telecommunications, particularly in tactical environments where the integrity and security of communications are essential.

Understanding this definition helps clarify how different communication methods can be applied effectively in various scenarios, ensuring operational success in the field.