A device that handles the remote communications processing for multiple terminals or workstations.

A programmable device that supports one or more terminals or printers. A cluster controller communicates with the host either through a local channel attachment or through a communications controller, modems, and phone lines. The HP 3000 emulates a cluster controller in an SNA network

1. Generally, an intelligent device that provides the connections for a cluster of terminals to a data link. 2. In SNA, a programmable device that controls the input/output operations of attached devices. Typically, an IBM 3174 or 3274 device.

A bisynchronous interface that provides a means of handling remote communication processing.