"The network 200 may include communications or networking software such as the software available from Novell, Microsoft, Artisoft, SCO, and other vendors, and may operate using TCP/IP, SPX, IPX, and other protocols over connections 116 that include twisted pair, coaxial, or optical fiber cables, telephone lines, satellites, microwave relays, modulated AC power lines, and/or other data transmission" . . . . .