Circuit Switching Each session is allocated a fixed fraction of the capacity on each ink along its path Dedicated resources Fixed path If capacity is used, calls are blocked E.g telephone network Advantages of circuit switching Fixed delays Guaranteed continuous delivery Disadvantages Circuits are not used when session is idle Inefficient for bursty traffic Circuit switching usually done using a fixed rate stream(e. g, 64 Kbps) Difficult to support variable data ratesCircuit Switching • Each session is allocated a fixed fraction of the capacity on each link along its path – Dedicated resources – Fixed path – If capacity is used, calls are blocked E.g., telephone network • Advantages of circuit switching – Fixed delays – Guaranteed continuous delivery • Disadvantages – Circuits are not used when session is idle – Inefficient for bursty traffic – Circuit switching usually done using a fixed rate stream (e.g., 64 Kbps) Difficult to support variable data rates Eytan Modiano Slide 10