A system and method for providing one or more client systems for communicating with a host system over a network. The emergency call unit is arranged to determine whether any remote speakerphone units are off-hook when the button on the pendant is actuated and if so, send a signal to each remote speakerphone unit to disconnect from the telephone line. In another embodiment, an interface adapter pod is provided that connects to the diagnostic interface on the probe card to process the test results and provide the results to a user interface such as a personal computer. In some instances, the metallic nanoparticles have an average cross-sectional dimension in a range of about 1 nm to about 100 nm. A recording device is provided, wherein by performing such processing, black images such as characters or lines maintain sharpness or clarity, and picture images can be formed as high quality images.