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CS601 Assignment No. 4 Semester Fall 2012 Data Communication Due Date: 29-01-2013 Please share your ideas here

Assignment No. 4
Semester Fall 2012
Data Communication - CS601

 

Total Marks: 30

 

Due Date: 29-01-2013

 

Objective: Understanding the T & E lines and Error detection method.

Instructions:

Please read the following instructions carefully before solving & submitting assignment:

Assignment should be in your own wordings not copied from net, handouts or books.

It should be clear that your assignment will not get any credit (marks) if:

 

  • The assignment is submitted after due date.
  • The submitted assignment does not open or file is corrupt.
  • The assignment is copied (from other student or copied from handouts or internet).

 

For any query about the assignment, contact at cs601@vu.edu.pk

 

GOOD LUCK

 

 

 

Q. 1. Telephone Companies use a hierarchy of Digital Signals Service (DS) which have different levels as DS-0, DS-1, DS-2, DS-3 and DS-4. All these levels have different data rates and are implemented through different types of T lines (from T-1 to T-4) or E lines (from E-1 to E-4) on the basis of data rate in each level.

Now you are required to fill  the columns of the given table according to following  instructions:

  1. Calculate the corresponding data rate against each number of given voice channels.
  2. Write the best suitable type of line (form T-1 to T-4 or from E-1 to E-4 line) with total number of T or E lines corresponding to calculated data rate. [15 Marks]

 

Note: Type of line (form T-1 to T-4 or from E-1 to E-4 line) and total number of T or E lines must be selected on the basis of calculated data rate having minimum wastage of capacity of the line. Only optimal solution is required for these columns.

 

No. of Voice Channels

Data Rate in Mbps

Type of T/E line used

Total No. of T/E lines

50

 

 

 

90

 

 

 

140

 

 

 

195

 

 

 

600

 

 

 

 

 

 

Q. 2.  Using Modulo-2 Division and Polynomial x4 + x3 + x + 1, perform the complete process of Cyclic Redundancy Check (CRC) on the given message by writing all steps for both sender and receiver end.

 Assume that the message has been received by the receiver without any error. [15 Marks]

 

Message:

1010111001100010

 

 

Views: 9853

Attachments:

Replies to This Discussion

No. of Voice Channels

Data Rate in Mbps

Type of T/E line used

Total No. of T/E lines

50

64Kbps

1/24 of T-1

1 Channel

90

1.544Mbps

1 T-1

24 Channels

140

3.152 Mbps

2 T-1

48 Channels

195

6.312 Mbps

4 T-1

96 Channels

600

44.736 Mbps

28 T-1

672 Channels

CS601_Assignment#04_Solution

Attachments:

1010111001100010

                ______ 1001100111

11011 ) 1010111001100010

11011

111111001100010

11011

1001001100010

11011

100101100010

11011

10011100010

11011

1000100010

11011

101000010

11011

11110010

11011

101010

00000 (because the left most bit is zero, So all zero from original)

101010

11011

11100

11011

100 Cyclic Redundancy Check (CRC) is 100

Polynomial (Answer)

x2 Not included in polynomial so it will be“0”,

Answer is

11011

its Divisor

bhai jo reviser decide karta hain hum us sa 1 kam 0 hum denominator man add nai karta kya???

 

Q 1) Answer

No. of Voice Channels

Data Rate in Mbps

Type of T/E line used

Total No. of T/E lines

50

3.208 Mbps

T-1

2

90

5.768 Mbpc

T-2

6

140

9.128 Mbps

T-3

12

195

12.648 Mbps

T-1

16

600

38.568 Mbps

T-1

25

T/E Carrier and Packetized Communications
T/E Carrier
T/E carrier systems use digital multiplexing to transmit voice and data signals. Maxim Integrated's solutions for T/E communications include line interface units (LIUs), framers, and single-chip transceivers (SCTs).
Carrier Ethernet
Carrier Ethernet is a standardized carrier-class service and network for communication among business, academic, and government local area networks (LANs), providing flexible bandwidth and scalability. Maxim's Ethernet-over-PDH (EoPDH)/SDH mapping devices extend Ethernet LAN segments for transmission over PDH/SDH data streams.

Q 1) Answer

No. of Voice Channels

Data Rate in Mbps

Type of T/E line used

Total No. of T/E lines

50

3.208 Mbps

T-1

2

90

5.768 Mbpc

T-2

6

140

9.128 Mbps

T-3

12

195

12.648 Mbps

T-1

16

600

38.568 Mbps

T-1

25

Q 1) Answer

No. of Voice Channels

Data Rate in Mbps

Type of T/E line used

Total No. of T/E lines

50

3.208 Mbps

T-1

2

90

5.768 Mbpc

T-2

6

140

9.128 Mbps

T-3

12

195

12.648 Mbps

T-1

16

600

38.568 Mbps

T-1

25

Q,2 exact sol :)

Attachments:

question no:01 ka exact solution knsa hai hai

full solution kon sa hai

can any one help in questio n 1 solution...?

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