Abstract: Apparatus and method providing improvements in establishing a data path between local and selected remote equipment over non-dedicated telephone lines. The present invention provides for the detecting of signalling activity during period not normally monitored, to provide a system which is resistant to accidental interruptions during the initial establishment of the data path, and includes apparatus, such as an external programmable code repeater insertable between the calling computer and the telephone line to overcome limitations of typical modems and modem software. Also included are further features offering greater flexibility in applications and permitting further compatibility with differing or more limited hardware and software systems.

Abstract: An apparatus connecting and establishing a communication link between a local and a remote computer to provide transfer of data wherein the remote computer is activated by a control unit, identification and protocol established and data transferred, as may be applied to provide personal electronic mail service. The preferred embodiment interposes the control unit between a non-dedicated telephone line and a remotely located personal computer having a modem therein, wherein a computer power-switching relay is connected to the control unit and is energized upon recognition of a selected protocol as provided by selected program control of the originating computer, and the communications link established via program responses of the remote computer and programmed signal initialization and responses of both computers according to firmware in the controller.