Abstract: A modular communication server provides a single communication interface between a host and a number of communication devices. The modular communication server can be configured to support multiple communication devices using one or more communication protocols. The modular communication server includes a master communication controller that provides the interface between the network and devices using a first communication protocol. Slave communication controllers can be connected to a bus internal to the modular communication server. Each of the slave communication controllers can independently support devices using a communication protocol. The master communication controller controls the communication between the host and each slave communication controller.