The KMD-5559 CommTalk Data Exchange Module is a microprocessor-based, programmable, communications controller. The CommTalk manages all communications between the KMC Digital Sub-LAN and an external reporting device such as a modem-to-modem/PC, modem-to-pager service, or a PC. The CommTalk module will also allow the Sub-LAN to run at higher speeds, provide smoother token passing, and store network alarms and messages. The CommTalk can be programmed to initiate a modem-to-modem/PC connection. The CommTalk will send any alarms and manage any request from a PC before terminating the modem-to-modem/PC connection.