Switching

Switching
Circuit Switching

Circuit Switching involves three different phases. These phases are known as circuit establishment, data transfer and Circuit disconnect.

Circuit Establishment
The circuit establishment is used to establish an end to end connection before the transfer of data. For the circuits segments there are two option. It can be dedicated link or it can be a shared link.


Data Transfer
Data is transferred from the source to the destination. The data can be either analog or digital, and the connection is a full duplex connection for the two stations that are connected.

Circuit Disconnect
Once the data transfer is complete and the circuit is disconnected which terminates the connection at data transfer.

PSTN and ISDN are two types of circuit-switching technology that may be used to implement a WAN in an enterprise setting.