Chapter 9 Communications Circuits 9.5 CIRCUIT ACQUISITION AND OWNERSHIP 9.5.1 Private Circuits Private circuits are normally installed and maintained by a company other than a common carrier 9.5.2 Leased circuits Leased circuits are circuits owned by common carriers but leased from them by another organization for full-time exclusive use. www.gxmu.edu.cn
9.5 CIRCUIT ACQUISITION AND OWNERSHIP 9.5.1 Private Circuits Private circuits are normally installed and maintained by a company other than a common carrier. 9.5.2 Leased Circuits Leased circuits are circuits owned by common carriers but leased from them by another organization for full-time exclusive use. www.gxmu.edu.cn Chapter 9 Communications Circuits
Chapter 9 Communications Circuits 9.6 CIRCUIT SWITCHIING Circuit swithing means that there is a dedicated communication line between two nodes but only for the duration of a connection。 www.gxmu.edu.cn
9.6 CIRCUIT SWITCHING Circuit swithing means that there is a dedicated communication line between two nodes, but only for the duration of a connection. www.gxmu.edu.cn Chapter 9 Communications Circuits
Chapter 9 Communications Circuits Orla Danver igure 9-6 Circuit switching networks build temporary connections between devices that wish to communicate www.gxmu.edu.cn
Figure 9-6 Circuit switching networks build temporary connections between devices that wish to communicate. www.gxmu.edu.cn Chapter 9 Communications Circuits