Abstract: A multi-mode driver with multiple transmitter types including a first transmitter coupled to a transmission channel and operative to output a signal for transmission on the channel and a second transmitter coupled to the channel and operative to output the signal for transmission on the channel, the second transmitter having at least one different output characteristic than the first transmitter. During the output of the signal from one of the transmitters, the other of the transmitters is biased with a bias supply voltage that prevents voltage breakdown of one or more transistors of the other transmitter.

Abstract: A multi-mode driver with multiple transmitter types including a first transmitter coupled to a transmission channel and operative to output a signal for transmission on the channel and a second transmitter coupled to the channel and operative to output the signal for transmission on the channel, the second transmitter having at least one different output characteristic than the first transmitter. During the output of the signal from one of the transmitters, the other of the transmitters is biased with a bias supply voltage that prevents voltage breakdown of one or more transistors of the other transmitter.

Abstract: A preferred embodiment of the invention utilizes embedded XML-based test documents to simulate programmable behavior. Scripted validations, and state-tracking and markup-defining visual presentations to simulated programmable behavior can be embedded into the test documents. Preferably, the test documents simulate control behavior not only at the network interface but also through a graphical user interface (“GUI”) with which a tester can interact manually during the testing process. Also preferably, the present invention is platform independent, to support a plurality of protocols and applications.

Abstract: A method, system and apparatus for establishing, monitoring and managing connectivity for communication among heterogeneous systems, such as in client-server networks having a plurality of systems, wherein the client-server network comprises a server for processing incoming events, an agent resident on at least one of the plurality of networks, and a monitor coupled to the agent, where the monitor handles and displays notifications and enables event handling. The agent remains in communication with the server to facilitate monitoring and error handling by one or more systems connected to the server. The server acts as a message router for forwarding events between one or more agents, and the server further stores events and event actions that flow through the system. Directory services facilitate querying and publishing to a repository or repositories of information to assist counter-parties in establishing connectivity directly with each other.