Invisible net Hard to find info about this one. I only found something from a patent: http://www.freepatentsonline.com/5469497.html It's a Google patent and Google owned Motorola so maybe it is that's it. It seems to implement the ICMS local area network. ICMS means Interactive Call Management Subsystems. Couldn't find more info about ICMS. It's strange that this is so badly documented.
Phones target this application