2. Digital access equipment attached to or inside a router calls the central office switch.

3. The central office of every local telephone company a computerized switch that works with other similar switches to route and complete a call-that's where the term circuit switching comes from.

4. A high-speed intraswitch trunk a fiber-optic link operating at a minimum of 45 megabits per second.

5. How Circuit-Switched Didital Networks Works s1160158 Masahiro Namizuka s1160159 yuji Nishimaku s1160161 Yu Nishimura s1160162 Isao Nishiyama

6. Picture