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    DSS-1st ASSIGNMENT

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    dinesh
    The document is an assignment sheet from K.S. Institute of Technology for their Telecommunication Engineering course. It contains 10 questions covering topics like [1] network structures and services, [2] frequency division multiplexing and time division multiplexing, [3] four wire circuit systems, [4] the hierarchy of public switched telephone networks and power level conversions, [5] synchronous digital hierarchy and plesiochronous digital hierarchy frame structures, [6] 30 channel PCM primary multiplexing, [7] Erlang's lost call formula, [8] traffic intensity, grade of service, congestion, busy hour and holding time, [9] probability calculations based on call arrival rates and [10] the

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    DSS-1st ASSIGNMENT

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    dinesh
    29 views1 page
    The document is an assignment sheet from K.S. Institute of Technology for their Telecommunication Engineering course. It contains 10 questions covering topics like [1] network structures and services, [2] frequency division multiplexing and time division multiplexing, [3] four wire circuit systems, [4] the hierarchy of public switched telephone networks and power level conversions, [5] synchronous digital hierarchy and plesiochronous digital hierarchy frame structures, [6] 30 channel PCM primary multiplexing, [7] Erlang's lost call formula, [8] traffic intensity, grade of service, congestion, busy hour and holding time, [9] probability calculations based on call arrival rates and [10] the

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    The document is an assignment sheet from K.S. Institute of Technology for their Telecommunication Engineering course. It contains 10 questions covering topics like [1] network structures and services, [2] frequency division multiplexing and time division multiplexing, [3] four wire circuit systems, [4] the hierarchy of public switched telephone networks and power level conversions, [5] synchronous digital hierarchy and plesiochronous digital hierarchy frame structures, [6] 30 channel PCM primary multiplexing, [7] Erlang's lost call formula, [8] traffic intensity, grade of service, congestion, busy hour and holding time, [9] probability calculations based on call arrival rates and [10] the

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    29 views1 page

    DSS-1st ASSIGNMENT

    Uploaded by

    dinesh
    The document is an assignment sheet from K.S. Institute of Technology for their Telecommunication Engineering course. It contains 10 questions covering topics like [1] network structures and services, [2] frequency division multiplexing and time division multiplexing, [3] four wire circuit systems, [4] the hierarchy of public switched telephone networks and power level conversions, [5] synchronous digital hierarchy and plesiochronous digital hierarchy frame structures, [6] 30 channel PCM primary multiplexing, [7] Erlang's lost call formula, [8] traffic intensity, grade of service, congestion, busy hour and holding time, [9] probability calculations based on call arrival rates and [10] the

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    of 1

    K.S.

    Institute of Technology, Bangalore

    DEPARTMENT OF
    TELE COMMUNICATION ENGINEERING
    ASSIGNMENT QUESTIONS

    Academic Year 2019-20


    Batch 2017-2021
    Year/Semester/section III/VI/A

    Course Code-Title 17EC654-Digital Switching Systems

    Name of the Instructor Dinesh kumar D S Dept TCE

    Assignment No: 1 Total marks:10


    Date of Issue: 1/3/2020 Date of Submission: 10/3/2020

    K
    Sl.No Assignment Questions CO Marks
    Level
    Explain with neat diagram various types of network structures and
    1. services. K3 1 1

    With suitable diagram, Explain principle of i) Frequency division


    2. K3 1 1
    multiplexing ii) Time division multiplexing.
    Describe the operation of four wire circuit system used in
    3. K3 1 1
    telecommunication.
    a.Explain the hierarchy of a national public switched
    telecommunication network (PSTN), with the help of a neat diagram.
    4. K3 1 1
    b. Express the following power levels in dBm and dBW: i)1mW ii)
    1W iii) 2mW iv)100mW
    With neat sketch, explain i) synchronous digital hierarchy (SDH) and
    5. K3 1 1
    ii) Plesiochronous Digital hierarchy (PDH) with frame structure.
    Explain 30 channel PCM primary multiplex with frame format and bit
    6. K3 1 1
    rate
    Derive an expression for iterative from of Erlang’s lost call formula
    7. K3 2 1
    with explanation of assumptions mode (first erlang distribution)
    Define the following terms: i) Traffic intensity ii) grade of service
    8. K3 2 1
    iii) congestion iv) busy hour v) holding time
    a) On average, one call arrives every 5 seconds. During a period of 10
    seconds, what is the probability that: i) No call arrive? ii) One Call
    arrives? iii) Two calls arrive? iv) More than two calls arrive?
    9. K3 2 1
    b) Four junctions are arranged in a full availability group.if the traffic
    offered to the group in busy hour is 0.8E.Find i) GOS ii)
    probability that one trunk is busy
    Derive the expression for second Erlang distribution with necessary
    10. K3 2 1
    assumptions

    Course in charge HOD

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