© Jörg Liebeherr, 1998-2003 CS757 Three Network Technologies Telephone Network –The largest worldwide computer network, specialized for voice –Switching.
1 Chapter 6 Hardware Layers: Metropolitan and Wide Area Networks Networking in the Internet Age by Alan Dennis Copyright © 2002 John Wiley & Sons, Inc.
1 Reference Models THE OSI & TCP/IP REFERENCE MODELS.
Three Network Technologies
