CIRCUIT 1 CIRCUIT-SWITCHED NETWORKS SWITCHED NETWORKS
A circuit A circuit-switched network consists of a set of switches switched network consists of a set of switches
connected by physical links. A connection between two connected by physical links. A connection between two
stations is a dedicated path stations is a dedicated path made of one or more links. made of one or more links.
However, each connection uses only one dedicated However, each connection uses only one dedicated
channel on each link. Each link is normally divided channel on each link. Each link is normally divided
into n channels by using FDM or TDM. into n channels by using FDM or TDM.
Three Phases
Efficiency
Delay
Circuit-Switched Technology in Telephone Networks
Topics discussed in this section: Topics discussed in this section: