WAN is a networking technology that spans large geographical areas like countries or continents. It consists of hosts like computers connected by subnets, which contain transmission lines and switching elements like routers. WAN standards define the physical and data link layers, with organizations providing standards for transmission and protocols like Frame Relay, PPP, and ISDN. ISDN provides an integrated digital service for voice and data over a digital bit pipe between customers and carriers. ATM is a connection-oriented network that originally aimed to merge different services but did not fully replace older technologies.

1. WAN Technology Physical and Data Link Layer Daniel Pioquinto [email_address]

3. What is WAN? subnet A simple overview of WAN Host The hosts, routers and subnet Diagram; Host

12. How it works: ISDN Basic Rate Digital Pipe 64 kbps digital PCM channel for voice or data 16-kbps out- of-band signal