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8192019 ECX4233_TMA1_2016

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8192019 ECX4233_TMA1_2016

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ECX 4233 ndash CommunicationAcademic Year 2016

Due date 29th

February 2016

Tutor Marked Assignment 1

Guidelines

bull You may need to refer study materials in addition to given course materials

bull State your references (other than giving references)

bull Those who want to improve presentation skill can present this assignment in a

PowerPoint format The presentation will schedule on request For more information

logging to moodle class or drop me an email

bull Write your answers in point form

Activity 1

1) What is meant by ldquotelecommunicationrdquo Explain it in your own words

2) Study about the historical evolution of telecommunication industry and discuss howthe standardization process help to growth of the industry

3) What are the most important advantages of global telecommunications

Standards Name three global standards organizations and list their responsibilities

Name the national body responsible for telecommunication standards

4) Giving reasons explain why following parties interested in global telecommunication

standards

(i)

Equipment manufactures(ii) Network operators

(iii)Academic experts

(iv) The service uses

Activity 2

1) Giving reasons explain what network topology is most suitable in telecommunication

networks

2)

Explain the differences between the RSU (Remote Subscriber Unit) and a Localexchange

Importantbull Marks will reduce according to the department assignment policy

bull Zero marks will be given for plagiarism

bull Write on your own words

bull Clear and brief answers with no unnecessary details will gain maximum marks

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3) Imagine there is a small island which have only 5 states Each state is not more than

983089983088 In size and assume each state has 10000 subscribers All are equally

distributed Suggest PSTN hierarchical structure and number planning for the same

State any assumption you have made

4) In modern telecommunication networks there is a trend to way of hierarchical

routing What can be the reasons behind that Explain it in your own words

Activity 3

1) With the aid of the diagrams explains the operation principle of a conventional

telephone

2) Compare and contrast following

(i) Local battery telephone and Central battery telephone system

(ii) Rotary dialing and tone dialing

3) What is a 2W4W hybrid and why is it needed at the end of the subscriber line

Explain how a 2W4W hybrid prevents the signal from the network (receiving pair)

from looping back to the transmitting pair

4) In a telephone set why speaker not hearing his own voice from phone receiver

Activity 4

1 Circuit switching is used to create a direct physical connection in a network while

message and packet switching used in store and forward type network Compare the

transfer time of each type of switching system and explain draw backs of message

switching over packet switching

2 Write short notes in following topics

MPLS - Multiprotocol Label Switching

MSAN - A multi-service access node

3 Study evaluation of switching technologies from manual switching to softswitching

Compare advantages of each technology

4 Discuss the advantages of SPC automation in telephone switching Compare

centralized SPC and distributed SPC

Activity 5

1 In telephony signalling is broken down in three functional areas

(i) Supervisory

(ii) Address(iii)Call progress audible-visual

Explain the purpose of each

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2 Differentiate following Write it in point form

(i) In-Band Signalling and Out-of-Band Signalling

(ii) Between line signalling and interregister signalling

(iii)A common channel and Channel associated signalling

(iv) Limitations of CAS and CCS

3 Study No 7 signalling types and explain the signalling nodes and their functions

Activity 6

1 Define grade of service How can we improve the grade of service Give the

downside of this What is the ideal value for grade of service Can this value be

achieved in practice Justify your answer

2 Figure 1 shows the change of the traffic intensity in a one day Give your suggestions

to maximally utilize the network resources and generate more revenue

Figure 1

3 In a particular exchange during busy hour 900 calls were offered to a group of trunks

during this time 6 calls were lost The average call duration being 3 minutes

Calculate

(i) Traffic offered in Erlangs

(ii) Traffic lost

(iii)Grade of service

(iv) Period of congestion

4 A group of 12 trunks is offered 4E of traffic Find

(i) The Grade of Service

(ii) The probability that at least 3 trunks are free

(iii) If one trunk is out of service what will be the Grade of Service

(iv) Due to new year wishes offered traffic increased by 10 What will be the

Grade of Service now

HOURS OF

THE DAY

0 2 4

TRAFFIC

6 8 10 12 2 4 6 8 10 12

AM NOONMID

NIGHT

Page 2: ECX4233_TMA1_2016

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bull 983127983137983161983150983141 983124983151983149983137983155983145 (2004) 983105983140983158983137983150983139983141983140 983109983148983141983139983156983154983151983150983145983139 983107983151983149983149983157983150983145983139983137983156983145983151983150983155 983123983161983155983156983141983149983155 6983156983144

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8192019 ECX4233_TMA1_2016

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C983144983137983150983143983141983154983155 983145983150 983139983151983157983154983155983141 983155983139983144983141983140983157983148983141 983137983150983140 983151983156983144983141983154 983157983154983143983141983150983156 983145983150983142983151983154983149983137983156983145983151983150 983159983145983148983148 983145983150983142983151983154983149983141983140 983158983145983137 983155983149983155 983137983150983140 983141983149983137983145983148983155

8192019 ECX4233_TMA1_2016

httpslidepdfcomreaderfullecx4233tma12016 46

983092 983109983107983128 983092983090983091983091 991251 983107983151983149983149983157983150983145983139983137983156983145983151983150 983090983088983089983092983087983090983088983089983093

ECX 4233 ndash CommunicationAcademic Year 2016

Due date 29th

February 2016

Tutor Marked Assignment 1

Guidelines

bull You may need to refer study materials in addition to given course materials

bull State your references (other than giving references)

bull Those who want to improve presentation skill can present this assignment in a

PowerPoint format The presentation will schedule on request For more information

logging to moodle class or drop me an email

bull Write your answers in point form

Activity 1

1) What is meant by ldquotelecommunicationrdquo Explain it in your own words

2) Study about the historical evolution of telecommunication industry and discuss howthe standardization process help to growth of the industry

3) What are the most important advantages of global telecommunications

Standards Name three global standards organizations and list their responsibilities

Name the national body responsible for telecommunication standards

4) Giving reasons explain why following parties interested in global telecommunication

standards

(i)

Equipment manufactures(ii) Network operators

(iii)Academic experts

(iv) The service uses

Activity 2

1) Giving reasons explain what network topology is most suitable in telecommunication

networks

2)

Explain the differences between the RSU (Remote Subscriber Unit) and a Localexchange

Importantbull Marks will reduce according to the department assignment policy

bull Zero marks will be given for plagiarism

bull Write on your own words

bull Clear and brief answers with no unnecessary details will gain maximum marks

8192019 ECX4233_TMA1_2016

httpslidepdfcomreaderfullecx4233tma12016 56

983093 983109983107983128 983092983090983091983091 991251 983107983151983149983149983157983150983145983139983137983156983145983151983150 983090983088983089983092983087983090983088983089983093

3) Imagine there is a small island which have only 5 states Each state is not more than

983089983088 In size and assume each state has 10000 subscribers All are equally

distributed Suggest PSTN hierarchical structure and number planning for the same

State any assumption you have made

4) In modern telecommunication networks there is a trend to way of hierarchical

routing What can be the reasons behind that Explain it in your own words

Activity 3

1) With the aid of the diagrams explains the operation principle of a conventional

telephone

2) Compare and contrast following

(i) Local battery telephone and Central battery telephone system

(ii) Rotary dialing and tone dialing

3) What is a 2W4W hybrid and why is it needed at the end of the subscriber line

Explain how a 2W4W hybrid prevents the signal from the network (receiving pair)

from looping back to the transmitting pair

4) In a telephone set why speaker not hearing his own voice from phone receiver

Activity 4

1 Circuit switching is used to create a direct physical connection in a network while

message and packet switching used in store and forward type network Compare the

transfer time of each type of switching system and explain draw backs of message

switching over packet switching

2 Write short notes in following topics

MPLS - Multiprotocol Label Switching

MSAN - A multi-service access node

3 Study evaluation of switching technologies from manual switching to softswitching

Compare advantages of each technology

4 Discuss the advantages of SPC automation in telephone switching Compare

centralized SPC and distributed SPC

Activity 5

1 In telephony signalling is broken down in three functional areas

(i) Supervisory

(ii) Address(iii)Call progress audible-visual

Explain the purpose of each

8192019 ECX4233_TMA1_2016

httpslidepdfcomreaderfullecx4233tma12016 66

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2 Differentiate following Write it in point form

(i) In-Band Signalling and Out-of-Band Signalling

(ii) Between line signalling and interregister signalling

(iii)A common channel and Channel associated signalling

(iv) Limitations of CAS and CCS

3 Study No 7 signalling types and explain the signalling nodes and their functions

Activity 6

1 Define grade of service How can we improve the grade of service Give the

downside of this What is the ideal value for grade of service Can this value be

achieved in practice Justify your answer

2 Figure 1 shows the change of the traffic intensity in a one day Give your suggestions

to maximally utilize the network resources and generate more revenue

Figure 1

3 In a particular exchange during busy hour 900 calls were offered to a group of trunks

during this time 6 calls were lost The average call duration being 3 minutes

Calculate

(i) Traffic offered in Erlangs

(ii) Traffic lost

(iii)Grade of service

(iv) Period of congestion

4 A group of 12 trunks is offered 4E of traffic Find

(i) The Grade of Service

(ii) The probability that at least 3 trunks are free

(iii) If one trunk is out of service what will be the Grade of Service

(iv) Due to new year wishes offered traffic increased by 10 What will be the

Grade of Service now

HOURS OF

THE DAY

0 2 4

TRAFFIC

6 8 10 12 2 4 6 8 10 12

AM NOONMID

NIGHT

Page 3: ECX4233_TMA1_2016

8192019 ECX4233_TMA1_2016

httpslidepdfcomreaderfullecx4233tma12016 36

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C983151983150983156983145983150983157983151983157983155 983137983155983155983141983155983155983149983141983150983156 983139983151983150983155983145983155983156983155 983151983142 3 983124983157983156983151983154 M983137983154983147983141983140 A983155983155983145983143983150983149983141983150983156983155(983124MA)

983124MA 123991251 A983155983155983145983143983150983149983141983150983156 983155983157983138983149983145983155983155983145983151983150

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CA M983137983154983147 = (B983124MA)015 + (983123B983124MA)015 + 1B(CA983124)03 + (LAB)04 gt= 40 (LAB)1 gt= 40

983127983144983141983154983141 CA 991251 C983151983150983156983145983150983157983151983157983155 983137983155983155983141983155983155983149983141983150983156 B983124MA983085 B983141983155983156 983124MA 983123B983124MA 991251 983123983141983139983151983150983140 B983141983155983156 983124MA 983137983150983140 BCA983124 991251 B983141983155983156

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G983151 983156983151 983156983144983141 983119983125983123L983085N983119DE983123 983152983137983143983141 983144983156983156983152983098983151983157983155983148983150983151983140983141983155983148983147 983137983150983140 983148983151983143 983151983150 983157983155983145983150983143 983156983144983141 983142983151983148983148983151983159983145983150983143

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983120983137983155983155983159983151983154983140 983098 983155983085983157983155983141983154

C983144983137983150983143983141 983156983144983141 983152983137983155983155983159983151983154983140 983156983151 983137 983152983154983145983158983137983156983141 983151983150983141 983151983150 983161983151983157983154 983142983145983154983155983156 983148983151983143983145983150 983145983156983155983141983148983142 I983142 983161983151983157 983144983137983158983141 983152983154983151983138983148983141983149983155 983145983150 983148983151983143983143983145983150983143

983137983150983140 983137983139983139983141983155983155983145983150983143 983161983151983157983154 983139983151983157983154983155983141 983152983148983141983137983155983141 983139983151983150983156983137983139983156 M983155 G983141983141983156983144983137 K983157983148983137983155983141983147983141983154983137 (983140983143983147983157983148983151983157983137983139983148983147)

I983142 983161983151983157 983144983137983158983141 983137983150983161 983153983157983141983154983145983141983155 983154983141983143983137983154983140983145983150983143 983156983144983141 983139983151983150983156983141983150983156 983151983142 983156983144983141 983139983151983157983154983155983141 983152983148983141983137983155983141 983139983151983150983156983137983139983156 983156983144983141 983139983151983157983154983155983141 983139983151983151983154983140983145983150983137983156983151983154

983123983152983141983139983145983137983148 N983151983156983141

1 983122983141983143983145983155983156983141983154983145983150983143 983142983151983154 983149983151983151983140983148983141 983139983148983137983155983155 983137983150983140 983142983154983141983153983157983141983150983156 983158983145983155983145983156983155 983137983154983141 983141983155983155983141983150983156983145983137983148 A983155983155983145983143983150983149983141983150983156983155 983149983137983147983154983155

983137983140983140983145983156983145983151983150983137983148 983150983151983156983141983155 983159983141983138 983154983141983155983151983157983154983139983141983155 983137983150983140 983137983148983148 983137983139983156983145983158983145983156983145983141983155 983154983141983148983137983156983141983140 983156983151 983156983144983145983155 983139983151983157983154983155983141 983157983152983140983137983156983141 983151983150983148983161 983145983150

983149983151983151983140983148983141 983139983148983137983155983155

2 K983150983151983159983148983141983140983143983141 983145983150 MA983124LAB 983149983137983161 983154983141983153983157983145983154983141 983129983151983157 983137983154983141 983137983140983158983145983155983141983140 983156983151 983148983141983137983154983150 983139983151983149983149983157983150983145983139983137983156983145983151983150 983138983148983151983139983147 983155983141983156 983145983150

983123983145983149983157983148983145983150983147

3 F983145983148983148 983156983144983141 983143983151983151983143983148983141 983142983151983154983149 983143983145983158983141983150 983138983141983148983151983159

9831449831569831569831529831559831439831519831519831439831484DM6983155J

C983144983137983150983143983141983154983155 983145983150 983139983151983157983154983155983141 983155983139983144983141983140983157983148983141 983137983150983140 983151983156983144983141983154 983157983154983143983141983150983156 983145983150983142983151983154983149983137983156983145983151983150 983159983145983148983148 983145983150983142983151983154983149983141983140 983158983145983137 983155983149983155 983137983150983140 983141983149983137983145983148983155

8192019 ECX4233_TMA1_2016

httpslidepdfcomreaderfullecx4233tma12016 46

983092 983109983107983128 983092983090983091983091 991251 983107983151983149983149983157983150983145983139983137983156983145983151983150 983090983088983089983092983087983090983088983089983093

ECX 4233 ndash CommunicationAcademic Year 2016

Due date 29th

February 2016

Tutor Marked Assignment 1

Guidelines

bull You may need to refer study materials in addition to given course materials

bull State your references (other than giving references)

bull Those who want to improve presentation skill can present this assignment in a

PowerPoint format The presentation will schedule on request For more information

logging to moodle class or drop me an email

bull Write your answers in point form

Activity 1

1) What is meant by ldquotelecommunicationrdquo Explain it in your own words

2) Study about the historical evolution of telecommunication industry and discuss howthe standardization process help to growth of the industry

3) What are the most important advantages of global telecommunications

Standards Name three global standards organizations and list their responsibilities

Name the national body responsible for telecommunication standards

4) Giving reasons explain why following parties interested in global telecommunication

standards

(i)

Equipment manufactures(ii) Network operators

(iii)Academic experts

(iv) The service uses

Activity 2

1) Giving reasons explain what network topology is most suitable in telecommunication

networks

2)

Explain the differences between the RSU (Remote Subscriber Unit) and a Localexchange

Importantbull Marks will reduce according to the department assignment policy

bull Zero marks will be given for plagiarism

bull Write on your own words

bull Clear and brief answers with no unnecessary details will gain maximum marks

8192019 ECX4233_TMA1_2016

httpslidepdfcomreaderfullecx4233tma12016 56

983093 983109983107983128 983092983090983091983091 991251 983107983151983149983149983157983150983145983139983137983156983145983151983150 983090983088983089983092983087983090983088983089983093

3) Imagine there is a small island which have only 5 states Each state is not more than

983089983088 In size and assume each state has 10000 subscribers All are equally

distributed Suggest PSTN hierarchical structure and number planning for the same

State any assumption you have made

4) In modern telecommunication networks there is a trend to way of hierarchical

routing What can be the reasons behind that Explain it in your own words

Activity 3

1) With the aid of the diagrams explains the operation principle of a conventional

telephone

2) Compare and contrast following

(i) Local battery telephone and Central battery telephone system

(ii) Rotary dialing and tone dialing

3) What is a 2W4W hybrid and why is it needed at the end of the subscriber line

Explain how a 2W4W hybrid prevents the signal from the network (receiving pair)

from looping back to the transmitting pair

4) In a telephone set why speaker not hearing his own voice from phone receiver

Activity 4

1 Circuit switching is used to create a direct physical connection in a network while

message and packet switching used in store and forward type network Compare the

transfer time of each type of switching system and explain draw backs of message

switching over packet switching

2 Write short notes in following topics

MPLS - Multiprotocol Label Switching

MSAN - A multi-service access node

3 Study evaluation of switching technologies from manual switching to softswitching

Compare advantages of each technology

4 Discuss the advantages of SPC automation in telephone switching Compare

centralized SPC and distributed SPC

Activity 5

1 In telephony signalling is broken down in three functional areas

(i) Supervisory

(ii) Address(iii)Call progress audible-visual

Explain the purpose of each

8192019 ECX4233_TMA1_2016

httpslidepdfcomreaderfullecx4233tma12016 66

983094 983109983107983128 983092983090983091983091 991251 983107983151983149983149983157983150983145983139983137983156983145983151983150 983090983088983089983092983087983090983088983089983093

2 Differentiate following Write it in point form

(i) In-Band Signalling and Out-of-Band Signalling

(ii) Between line signalling and interregister signalling

(iii)A common channel and Channel associated signalling

(iv) Limitations of CAS and CCS

3 Study No 7 signalling types and explain the signalling nodes and their functions

Activity 6

1 Define grade of service How can we improve the grade of service Give the

downside of this What is the ideal value for grade of service Can this value be

achieved in practice Justify your answer

2 Figure 1 shows the change of the traffic intensity in a one day Give your suggestions

to maximally utilize the network resources and generate more revenue

Figure 1

3 In a particular exchange during busy hour 900 calls were offered to a group of trunks

during this time 6 calls were lost The average call duration being 3 minutes

Calculate

(i) Traffic offered in Erlangs

(ii) Traffic lost

(iii)Grade of service

(iv) Period of congestion

4 A group of 12 trunks is offered 4E of traffic Find

(i) The Grade of Service

(ii) The probability that at least 3 trunks are free

(iii) If one trunk is out of service what will be the Grade of Service

(iv) Due to new year wishes offered traffic increased by 10 What will be the

Grade of Service now

HOURS OF

THE DAY

0 2 4

TRAFFIC

6 8 10 12 2 4 6 8 10 12

AM NOONMID

NIGHT

Page 4: ECX4233_TMA1_2016

8192019 ECX4233_TMA1_2016

httpslidepdfcomreaderfullecx4233tma12016 46

983092 983109983107983128 983092983090983091983091 991251 983107983151983149983149983157983150983145983139983137983156983145983151983150 983090983088983089983092983087983090983088983089983093

ECX 4233 ndash CommunicationAcademic Year 2016

Due date 29th

February 2016

Tutor Marked Assignment 1

Guidelines

bull You may need to refer study materials in addition to given course materials

bull State your references (other than giving references)

bull Those who want to improve presentation skill can present this assignment in a

PowerPoint format The presentation will schedule on request For more information

logging to moodle class or drop me an email

bull Write your answers in point form

Activity 1

1) What is meant by ldquotelecommunicationrdquo Explain it in your own words

2) Study about the historical evolution of telecommunication industry and discuss howthe standardization process help to growth of the industry

3) What are the most important advantages of global telecommunications

Standards Name three global standards organizations and list their responsibilities

Name the national body responsible for telecommunication standards

4) Giving reasons explain why following parties interested in global telecommunication

standards

(i)

Equipment manufactures(ii) Network operators

(iii)Academic experts

(iv) The service uses

Activity 2

1) Giving reasons explain what network topology is most suitable in telecommunication

networks

2)

Explain the differences between the RSU (Remote Subscriber Unit) and a Localexchange

Importantbull Marks will reduce according to the department assignment policy

bull Zero marks will be given for plagiarism

bull Write on your own words

bull Clear and brief answers with no unnecessary details will gain maximum marks

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983093 983109983107983128 983092983090983091983091 991251 983107983151983149983149983157983150983145983139983137983156983145983151983150 983090983088983089983092983087983090983088983089983093

3) Imagine there is a small island which have only 5 states Each state is not more than

983089983088 In size and assume each state has 10000 subscribers All are equally

distributed Suggest PSTN hierarchical structure and number planning for the same

State any assumption you have made

4) In modern telecommunication networks there is a trend to way of hierarchical

routing What can be the reasons behind that Explain it in your own words

Activity 3

1) With the aid of the diagrams explains the operation principle of a conventional

telephone

2) Compare and contrast following

(i) Local battery telephone and Central battery telephone system

(ii) Rotary dialing and tone dialing

3) What is a 2W4W hybrid and why is it needed at the end of the subscriber line

Explain how a 2W4W hybrid prevents the signal from the network (receiving pair)

from looping back to the transmitting pair

4) In a telephone set why speaker not hearing his own voice from phone receiver

Activity 4

1 Circuit switching is used to create a direct physical connection in a network while

message and packet switching used in store and forward type network Compare the

transfer time of each type of switching system and explain draw backs of message

switching over packet switching

2 Write short notes in following topics

MPLS - Multiprotocol Label Switching

MSAN - A multi-service access node

3 Study evaluation of switching technologies from manual switching to softswitching

Compare advantages of each technology

4 Discuss the advantages of SPC automation in telephone switching Compare

centralized SPC and distributed SPC

Activity 5

1 In telephony signalling is broken down in three functional areas

(i) Supervisory

(ii) Address(iii)Call progress audible-visual

Explain the purpose of each

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983094 983109983107983128 983092983090983091983091 991251 983107983151983149983149983157983150983145983139983137983156983145983151983150 983090983088983089983092983087983090983088983089983093

2 Differentiate following Write it in point form

(i) In-Band Signalling and Out-of-Band Signalling

(ii) Between line signalling and interregister signalling

(iii)A common channel and Channel associated signalling

(iv) Limitations of CAS and CCS

3 Study No 7 signalling types and explain the signalling nodes and their functions

Activity 6

1 Define grade of service How can we improve the grade of service Give the

downside of this What is the ideal value for grade of service Can this value be

achieved in practice Justify your answer

2 Figure 1 shows the change of the traffic intensity in a one day Give your suggestions

to maximally utilize the network resources and generate more revenue

Figure 1

3 In a particular exchange during busy hour 900 calls were offered to a group of trunks

during this time 6 calls were lost The average call duration being 3 minutes

Calculate

(i) Traffic offered in Erlangs

(ii) Traffic lost

(iii)Grade of service

(iv) Period of congestion

4 A group of 12 trunks is offered 4E of traffic Find

(i) The Grade of Service

(ii) The probability that at least 3 trunks are free

(iii) If one trunk is out of service what will be the Grade of Service

(iv) Due to new year wishes offered traffic increased by 10 What will be the

Grade of Service now

HOURS OF

THE DAY

0 2 4

TRAFFIC

6 8 10 12 2 4 6 8 10 12

AM NOONMID

NIGHT

Page 5: ECX4233_TMA1_2016

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983093 983109983107983128 983092983090983091983091 991251 983107983151983149983149983157983150983145983139983137983156983145983151983150 983090983088983089983092983087983090983088983089983093

3) Imagine there is a small island which have only 5 states Each state is not more than

983089983088 In size and assume each state has 10000 subscribers All are equally

distributed Suggest PSTN hierarchical structure and number planning for the same

State any assumption you have made

4) In modern telecommunication networks there is a trend to way of hierarchical

routing What can be the reasons behind that Explain it in your own words

Activity 3

1) With the aid of the diagrams explains the operation principle of a conventional

telephone

2) Compare and contrast following

(i) Local battery telephone and Central battery telephone system

(ii) Rotary dialing and tone dialing

3) What is a 2W4W hybrid and why is it needed at the end of the subscriber line

Explain how a 2W4W hybrid prevents the signal from the network (receiving pair)

from looping back to the transmitting pair

4) In a telephone set why speaker not hearing his own voice from phone receiver

Activity 4

1 Circuit switching is used to create a direct physical connection in a network while

message and packet switching used in store and forward type network Compare the

transfer time of each type of switching system and explain draw backs of message

switching over packet switching

2 Write short notes in following topics

MPLS - Multiprotocol Label Switching

MSAN - A multi-service access node

3 Study evaluation of switching technologies from manual switching to softswitching

Compare advantages of each technology

4 Discuss the advantages of SPC automation in telephone switching Compare

centralized SPC and distributed SPC

Activity 5

1 In telephony signalling is broken down in three functional areas

(i) Supervisory

(ii) Address(iii)Call progress audible-visual

Explain the purpose of each

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983094 983109983107983128 983092983090983091983091 991251 983107983151983149983149983157983150983145983139983137983156983145983151983150 983090983088983089983092983087983090983088983089983093

2 Differentiate following Write it in point form

(i) In-Band Signalling and Out-of-Band Signalling

(ii) Between line signalling and interregister signalling

(iii)A common channel and Channel associated signalling

(iv) Limitations of CAS and CCS

3 Study No 7 signalling types and explain the signalling nodes and their functions

Activity 6

1 Define grade of service How can we improve the grade of service Give the

downside of this What is the ideal value for grade of service Can this value be

achieved in practice Justify your answer

2 Figure 1 shows the change of the traffic intensity in a one day Give your suggestions

to maximally utilize the network resources and generate more revenue

Figure 1

3 In a particular exchange during busy hour 900 calls were offered to a group of trunks

during this time 6 calls were lost The average call duration being 3 minutes

Calculate

(i) Traffic offered in Erlangs

(ii) Traffic lost

(iii)Grade of service

(iv) Period of congestion

4 A group of 12 trunks is offered 4E of traffic Find

(i) The Grade of Service

(ii) The probability that at least 3 trunks are free

(iii) If one trunk is out of service what will be the Grade of Service

(iv) Due to new year wishes offered traffic increased by 10 What will be the

Grade of Service now

HOURS OF

THE DAY

0 2 4

TRAFFIC

6 8 10 12 2 4 6 8 10 12

AM NOONMID

NIGHT

Page 6: ECX4233_TMA1_2016

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983094 983109983107983128 983092983090983091983091 991251 983107983151983149983149983157983150983145983139983137983156983145983151983150 983090983088983089983092983087983090983088983089983093

2 Differentiate following Write it in point form

(i) In-Band Signalling and Out-of-Band Signalling

(ii) Between line signalling and interregister signalling

(iii)A common channel and Channel associated signalling

(iv) Limitations of CAS and CCS

3 Study No 7 signalling types and explain the signalling nodes and their functions

Activity 6

1 Define grade of service How can we improve the grade of service Give the

downside of this What is the ideal value for grade of service Can this value be

achieved in practice Justify your answer

2 Figure 1 shows the change of the traffic intensity in a one day Give your suggestions

to maximally utilize the network resources and generate more revenue

Figure 1

3 In a particular exchange during busy hour 900 calls were offered to a group of trunks

during this time 6 calls were lost The average call duration being 3 minutes

Calculate

(i) Traffic offered in Erlangs

(ii) Traffic lost

(iii)Grade of service

(iv) Period of congestion

4 A group of 12 trunks is offered 4E of traffic Find

(i) The Grade of Service

(ii) The probability that at least 3 trunks are free

(iii) If one trunk is out of service what will be the Grade of Service

(iv) Due to new year wishes offered traffic increased by 10 What will be the

Grade of Service now

HOURS OF

THE DAY

0 2 4

TRAFFIC

6 8 10 12 2 4 6 8 10 12

AM NOONMID

NIGHT