What is an out of band modem?

An out-of-band modem is a type of modem that operates independently of the primary data network, allowing remote management and monitoring of network devices. It typically connects to a separate communication channel, such as a dedicated phone line or cellular network, enabling administrators to access and control network equipment even when the primary network is down. This is particularly useful for troubleshooting and maintaining network reliability. Out-of-band management enhances security by providing a dedicated path for management traffic, separate from regular data traffic.