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TUI Network Architectures and Technologies Discussion


The evolution of WAN architectures has involved a variety of dominant designs such as T-1 and T-3 lines, which are still quite popular but do not meet high-traffic demands. Instead, Frame Relay and ATM are more commonly used to provide an interface to public high-speed switched networks. ATM, SDMS, and SONET are capable of handling voice, image, and data traffic concurrently. In addition, most ATM suppliers provide permanent virtual connections of dedicated time division multiplexing (TDM) channels to set up private networks.

1.Explain the differences between ISDN and IDN. How is ISDN accessed?

2.What is broadband ISDN? Compare and contrast the services used in B-ISDN.

3.Which are the three layers under X.25 protocol in relation to the OSI layer?

4.What are the advantages and disadvantages of ATM compared with X.25?

5.Explain the ATM protocol architecture.

6.Give two examples of ATM networks.

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