Key strokes and number entry are minimized. To reduce errors, at any time all valid functions are clearly indicated in a function matrix. Detailed billing information is stored for each extension and can be printed out as required. Each node consists of a modem, and an intelligent network interface card where the network software resides. Anny terminal can be connected to the node via an RS232 interface.
Application software is available for messaging.
Simulation studies were performed to tailor the algorithm suggested in this standard for other applications such as multi-media Personal Computers.