WANs connect smaller networks together (LANs, CANs, MANs) Covers an relatively large area (Countries, Cities) Related Topics Dial Up Connection Integrated Services Digital Network (ISDN) T-Carrier and E-Carrier Digital Signal Lines Digital Subscriber Line (DSL) Frame Relay Asynchronous Transfer Mode (ATM) Fiber Distributed Data Interface (FDDI) Synchronous Optical Network (SONET)