Simultaneous control of radio frequency modem in a multi-tasking system using a single session manager program with separate command queue for each application program

摘要

A data communication method provides management and control functions to allow access to a shared radio frequency communication device by multiple concurrently executing software applications. A predetermined set of commands common to all of the software applications enable a consistent, high-level software interface to the communication device. A single computer program controls the communication device and permits simultaneous independent interface to each of the software applications.