1. How circuit-Switched Digital
Network Works
● About circuit-switch
● What Central office switch do?
● The Intraswitch
● What destination router do?

2. About circuit-switch.
● Circuit switching is a
telecommunication
technology which
prepare digital circuit
which connect
between two nodes.

3. What Central Office switch do?
● The central office
switch gets a
incoming call and
makes a digital
connection to the
destination.

4. The Intraswitch
● Central office switch
use a intraswitch
trunk which is a fiber-
optic link operating.
●
●

5. What destination router do?
● When the destination
router gets incoming
call, it makes a
connection to the
LAN.

6. Reference
@IT
http://www.atmarkit.co.jp/
wikipedia
http://ja.wikipedia.org/wiki/