• Digital versus Analog
• Network Nodes (Switches) - autonomous pieces working together
• Each has own ID - phone number, exchange, area code, country code
• Transmits voice, data, pictures, sound, text, video via transmission lines
• Many attachments for specific functions
• Circuit Switching
• Fee Based Services - directory assistance, weather, return call

• Cost based on subscription plus time and distance

Last update 11:56PM 4/19/00 by seminars@grizbiz.com