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•  Voice
               •  Video
               •  Data
               •  Multimedia


                       Use of Fiber Optics BISDN typically relies on fiber optic communication, which allows

                        high-capacity data transmission.


                       Quality  of  Service  (QoS)  It  can  support  different  types  of  traffic  with  guaranteed
                        performance.


                       4. Key Technology Used in BISDN The main technology used in BISDN is:

            2.10 Asynchronous Transfer Mode (ATM)


            ATM is a cell-based switching technology used to transmit information.

                       ATM Cell Structure



            ATM sends data in small fixed-size units called cells.

            Each cell contains 53 bytes:


               •  5 bytes header
               •  48 bytes payload (data)

                       Advantages of ATM


               •  Fast switching
               •  Low delay
               •  Suitable for real-time applications such as voice and video

                       5. Components of BISDN


                       Terminal Equipment (TE)


            Devices used by users such as:


               •  Computers
               •  Telephones
               •  Multimedia devices

                       Network Termination (NT)


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