KMD Computer centre

Introduction

In September 2009 to March 2010 IADCS course, four assignments including that of EN (Enterprise Networking) have to accomplished. This year Enterprise Networking assignment includes five tasks, all of which are for developing Networking system for Police Department.

Task 1 is the creating a network topologies for the police department system comprising. It included the network topologies of police department, a statement of the advantages and disadvantages of each medium and recommendation for which topology and medium.

Task 2 is creating the internet connection detailing the internet services that may be required to support the information and process requirement of the police department. It includes internet services (ISP), connection speeds and suitable requirement, Internet service provider that can be obtained by the services offered and price charged.

Task 3 is creating the two- way voice communications (E.g. GSM and PTMR). It included each method works, details of the legal requirements of system, licensing and requirement costs, limitation and provide recommendation for how voice communications.

Task 4 is creating about PBX and KTS. It included main equipment that would be installed, features available with each system, cost of equipment and operating system and then provide recommendation.

Task 5 is create comprehensive, professional report describing network recommendations. It included review, details of Tasks 1- 4, assumption, weakness and improvement.

Task 1

Task 1 10 Marks

Investigate the possible network topologies and media that could be used to create the in-house network (LAN) for the Police Department.

  1. Explain how the topologies operate. (4 marks)
  2. Explain the advantages and disadvantages of each medium. (4 marks)
  3. Provide a recommendation for which topology and medium to use including reasons for this recommendation. (2 marks)
  1. Explain how the topologies operate. (4 marks)

Star Topology

In local area networks where the star topology is used, each machine is connected to a central hub. . As there are no dedicated links between nodes this topology does not allow direct traffic between nodes.

Ring Topology

In the ring, each computer is connected directly to two other computers in the network. Data moves down a one-way path from one computer to another computer.

Bus Topology

A bus network uses a multi-drop transmission medium, all node on the network share a common bus and thus share communication. This allows only one device to transmit at a time.

  1. Explain the advantages and disadvantages of each medium. (4 marks)

Coaxial Cable

  • Advantages : Wide bandwidth, high capacity, little outside interference.
  • Disadvantages : Larger cable, difficult to install.

Twisted-Pair Cable

  • Advantages : Low cost, easy to install.
  • Disadvantages : Signals that suffer attenuation, Cross talk.

Fiber-Optic Cable

  • Advantages : Very high bandwidth and capacity, free from interference, secure, small, Lightweight.
  • Disadvantages : Expensive, difficult to connect, need to convert between electrical and optical.
  1. Provide a recommendation for which topology and medium to use including reasons for this recommendation. (2 marks)

I provide, we should be used to star topology and fiber-optic cable system. Because star topology is less expensive than a mesh topology, easy to install, due to its centralized nature, the topology offers simplicity of operation and fiber-optic cable is secure, very high bandwidth and capacity.

Task 2

Task 2 10 Marks

Investigate the Internet connection requirements for the Police Department.

  1. Describe the Internet services that may be required. (3 marks)
  2. Explain the connection speeds that are suitable for these requirements. (2 marks)
  3. Find examples of Internet Service Providers (ISP) that can meet these requirements in your country. (3 marks)
  4. Make a recommendation to use one ISP based upon the services offered and price charged. (2 marks)
  1. Describe the Internet services that may be required. (3 marks)
  • For voice communication over the Internet. (e. g. Voice Over IP)
  • For use to E-mail (Electronic Mail), sending messages from one Internet user to another using Internet as delivery mechanism.
  • The headquarters will house all the communications and computer system for the Police Department.
  • To send top secrets data.
  • To connect Townsville Police Department and four districts headquarters building.
  • To used investigate serious crimes such as murder.
  1. Explain the connection speeds that are suitable for these requirements. (2 marks)

We would like to recommend to use 512Kbps for the police department because of it is high bandwidth, high speed internet access and secure. So, it won't be slowed down by heavy traffic while dialing into an Internet Service Provider (ISP).

  1. Find examples of Internet Service Providers (ISP) that can meet these requirements in your country. (3 marks)
  • IP star Satellite Broadband

Activation fee (FEC) 1,250, monthly fee (Kyat) 280,000, free e-mail accounts 25, 2 VoIP services, speed (MIR) 384, data limit (MB) 10,000.

  • ADSL (Asymmetric Digital Subscriber Line)
  • Broad band wireless

Activation fee (FEC) 840, monthly fee (FEC) 130, free e-mail accounts 25, 2 VoIP services, speed (MIR) 512, data limit (MB) 10,000.

  1. Make a recommendation to use one ISP based upon the services offered and price charged. (2 marks)

Recommendation for broad band wireless, by use to 512Kbps speeds, which are better than other connection for Police Department. Because it is high speed digital communication and secure. Activation fee (FEC) 840, monthly fee (FEC) 130.

Task 3

Task 3 30 Marks

Investigate the methods the Police Department could implement for two-way voice communications. As a minimum include the following information:

  1. How each method works (frequencies, full/half duplex, etc)? (6 marks)
  2. Details of the legal requirements for operating the system in your country (e.g. allocation of frequencies, licensing requirements, etc). (6 marks)
  3. Costs of setting up and operating the system, including licensing costs, equipment costs, etc. (6 marks)
  4. Limitations of each method (interference, range, etc). (6 marks)
  5. Provide a recommendation for how voice communications should be set up and run including reasons for this recommendation. (6 marks)
  1. How each method works (frequencies, full/half duplex, etc)? (6 marks)

Global System for Mobile Communications (GSM)

  • Uses digital technology.
  • High speech quality.
  • Simple text Messaging Service (SMS).
  • Much improved network capacity
  • Permits "romancing with other countries networks.
  • Not a worldwide standard.

Public Trunked Mobile Radio (PTMR)

  • Provides local communications on a single channel.
  • Half duplex operation requiring strict operation procedures.
  • Bandwidth and channel availability is limited.
  • Coverage is limited.
  • Requires a license from the appropriate government department.
  1. Details of the legal requirements for operating the system in your country (e.g. allocation of frequencies, licensing requirements, etc). (6 marks)

GSM

Requirements GSM allocation frequencies,

Frequencies Range

GSM 900 880 915 MHz paired with 925 960 MHz

Data transfer rate is 9.6Kbps.

To have the call charges passed back to their home cellular network service provider and permits roaming with other countries networks.

PTMR

Requirements for Public Trunked Mobile Radio allocation frequencies band 806 MHz 821MHz paired with 851 MHz 866 MHz

Data transfer rate is 2.2Kbps.

Requires a license from the appropriate government department.

  1. Costs of setting up and operating the system, including licensing costs, equipment costs, etc. (6 marks)

GSM

Exchange fee (FEC) 9500

Operating system and Base station fee (FEC) 4900

License fee (FEC) 1500

Handset fee (FEC) 200

Deposit fee (FEC) at least 30

Total Fees = 16100 (FEC)

PTMR

Operating system fee (FEC) 1250

License fee (FEC) 300

Handset fee (FEC) 150

Total Fees = 1700 (FEC)

  1. Limitations of each method (interference, range, etc). (6 marks)

GSM

The frequency range between 935 and 960 MHz is used as the base station transmitting frequency (down link) and the frequencies between 890 and 915 MHz are used as the base station receiving frequency (up link).Data speeds up to 9.6 Kbit/s.

PTMR

Trunk radio systems can be operated as local systems with only one base station or as area-wide (cellular) systems with cell sizes from 3km up to 25km, e.g., in metropolitan areas with 6km diameter of the cells .Data transmitted at 1.2 Kbit/s.

  1. Provide a recommendation for how voice communications should be set up and run including reasons for this recommendation. (6 marks)

Recommendation for PTMR, which are operated by large groups, such as port authorities, automobile manufacturers, airline companies and the police. Requires a license from the appropriate government department. And then it is lower than GSM costs and coverage is limited.

Task 4

Task 4 40 Marks

Investigate telephone systems available in your country for single-site organizations like the Police Department. Pay particular attention to:

  1. The main equipment that would be installed. (8 marks)
  2. The features available with each system. (12 marks)
  3. The costs of equipment and installation. (6 marks)
  4. The cost of operating the system. (6 marks)
  5. Provide a recommendation for which system to purchase including reasons for this recommendation. (8 marks)
  1. The main equipment that would be installed. (8 marks)

Private Branch exchange (PBX)

PBX stands for Private Branch Exchange, which is a private telephone network used within a company. The users of the PBX phone system share a number of outside lines for making external phone calls.

A PBX connects the internal telephones within a business and also connects them to the public switched telephone network (PSTN).

Key Telephone System (KTS)

A key system or key telephone system is a multiline telephone system typically used in small office environments. Key was a Bell System term of art for a manually operated switch, such as the line-buttons on the phones associated with such systems. A key system was originally distinguished from a private branch exchange (PBX) in that it allowed the station user to see and control the calls directly, manually, using lighted line buttons.

This system is included equipments are,

  • KTS Phone
  • PBX
  • Digital Phone
  1. The features available with each system. (12 marks)

KTS and PBX of features available

  • Dial other extensions
  • Dial external lines
  • To receive external calls
  • To make an enquiry call to another extension
  • To transfer a call to another extension
  • Call barring
  • Hunt groups One number selects a group of lines.
  • Call diversion Calls sent to another extension.
  • Short code dialing.
  • Night service Handling of out of hours calls.
  • Call parking To enable a call to be picked up at another location.
  • Call hold To avoid caller overhearing.
  • Automatic call back Also know as "Call back when free.
  • Conference call A number of telephones connected to one line.
  • Communications group A department with a close community of interest.
  • Automatic answers Avoids having to lift handset, poses a security risk.
  • Temporary barring of external calls.
  • Save last number dialed.
  1. The costs of equipment and installation. (6 marks)
  1. Provide a recommendation for which system to purchase including reasons for this recommendation. (8 marks)

Recommendation for PBX system, a private branch exchange (PBX) allows several trunks (outside lines) from the central office to be shared and the switching for selecting these lines is within the PBX. A PBX is sometimes referred to as a phone switch.

And then this service is support the shared and switching for selecting these lines. PBX system selects external lines and then PBX have a central processor and a switchboard console. PBX system is to connect any internal extension to any external line and to allow internal extensions to connect to each other. So this service can be used the larger companies that need more capabilities.

Task 5

Create a comprehensive, professional report describing your network recommendations. This should include the details of Tasks 1 4, have estimates of cost throughout and have an executive summary at the start giving the key points.

According to the scenario, the task 5 is review. I produce report from the content in task1 to task 4. The task 5 is represented how to investigate the topologies and cable, ISP and internet connection speed, two-way voice communications and phone line about KTS (key-telephone system and PBX Private Branch Exchange System). These report included assumption and choice, Review of work, weakness and improvement. For the assumption, I how to analyst or investigated the each task by task. For choice, I represent advantages and disadvantages of each task by task. And then, I recommend the any choice which is suitable for the police department. For Review of work, I review of my task that is the content is acceptable or unacceptable or content is ok or may be the content is any change. For the weakness, I represent the content which can be search is easy or difficult and the content where can be search. For the improvement, we can get any knowledge from the task or this task is support for my exam.

I provide, we should be used to star topology and fiber-optic cable system. Because star topology is less expensive than a mesh topology, easy to install, due to its centralized nature, the topology offers simplicity of operation and fiber-optic cable is secure, very high bandwidth and capacity.

Assumption and choice,

Assumption to the Task 1, I learn topologies and cable in my Enterprise Networking. So, searching is easily available. I learn star topologies, bus topologies, ring topologies and mesh. And then, I study many different cable to Networking Essential Fifth Edition book. That is overhead copper wire, twisted pair cable, Fiber optic cable, Coaxial cable. So, I can choice recommend topologies and cable for the police department. That is star topology and Fiber-optic cables.

Review of work, weakness and improvement

        According to the Task 1, I reference for my Enterprise Networking and I can search topology from the internet and Network Essential Fifth Edition. I can learn, study and search is easy for this task. I can learn these topologies and cable in my subject. But I don't connect the network by using topologies. Some are connected. Nevertheless, I can improve network knowledge. That can support with my global exam. And then, I can get more experience about network topologies and network cables.

For Task 2

  • For voice communication over the Internet. (e. g. Voice Over IP)
  • For use to E-mail (Electronic Mail), sending messages from one Internet user to another using Internet as delivery mechanism.
  • The headquarters will house all the communications and computer system for the Police Department.
  • To send top secrets data.
  • To connect Townsville Police Department and four districts headquarters building.
  • To used investigate serious crimes such as murder.

We would like to recommend to use 512Kbps for the police department because of it is high bandwidth, high speed internet access and secure. So, it won't be slowed down by heavy traffic while dialing into an Internet Service Provider (ISP).

  • IP star Satellite Broadband

Activation fee (FEC) 1,250, monthly fee (Kyat) 280,000, free e-mail accounts 25, 2 VoIP services, speed (MIR) 384, data limit (MB) 10,000.

  • ADSL (Asymmetric Digital Subscriber Line)
  • Broad band wireless

Activation fee (FEC) 840, monthly fee (FEC) 130, free e-mail accounts 25, 2 VoIP services, speed (MIR) 512, data limit (MB) 10,000.

Recommendation for broad band wireless, by use to 512Kbps speeds, which are better than other connection for Police Department. Because it is high speed digital communication and secure. Activation fee (FEC) 840, monthly fee (FEC) 130.

Assumption and choice,

Assumption to the Task 2, I learn internet connection about Internet Service Provider (ISP). And then, my country how to connect the internet connection such ADSL, WiMax, IPStar and Broad band wireless connection. Besides, which bandwidths are most suitable for the police department. So, it searching is not easy for me but I get some information is available. I learn about internet from my subject. And then, I study other internet website and internet book. I need to know available bandwidth for the police department. I recommend Broad band wireless for the police department.

Review of work, weakness and improvement

        According to the Task 2, this task is a little difficult. But I got search this information is the internet and in Myanmar teleport (MPT). The weakness of this task 2 is Myanmar police department can't use internet everywhere. Some main department use internet connection. I can't know their internet connection speed. So, this is the policy. But, I can know the internet connection is how much charges and how about available internet connection speed and can be use everywhere. From the task 2, I can get the internet knowledge that is support for my subject. After the task 2, I more interested internet connection speeds, bandwidth and that is how to use anywhere.

For Task 3

Global System for Mobile Communications (GSM)

  • Uses digital technology.
  • High speech quality.
  • Simple text Messaging Service (SMS).
  • Much improved network capacity
  • Permits "romancing with other countries networks.
  • Not a worldwide standard.

Public Trunked Mobile Radio (PTMR)

  • Provides local communications on a single channel.
  • Half duplex operation requiring strict operation procedures.
  • Bandwidth and channel availability is limited.
  • Coverage is limited.
  • Requires a license from the appropriate government department.

GSM

Requirements GSM allocation frequencies,

Frequencies Range

GSM 900 880 915 MHz paired with 925 960 MHz

Data transfer rate is 9.6Kbps.

To have the call charges passed back to their home cellular network service provider and permits roaming with other countries networks.

PTMR

Requirements for Public Trunked Mobile Radio allocation frequencies band 806 MHz 821MHz paired with 851 MHz 866 MHz

Data transfer rate is 2.2Kbps.

Requires a license from the appropriate government department.

GSM

  • Exchange fee (FEC) 9500
  • Operating system and Base station fee (FEC) 4900
  • License fee (FEC) 1500
  • Handset fee (FEC) 200
  • Deposit fee (FEC) at least 30
  • Total Fees = 16100 (FEC)

PTMR

  • Operating system fee (FEC) 1250
  • License fee (FEC) 300
  • Handset fee (FEC) 150
  • Total Fees = 1700 (FEC)

GSM

The frequency range between 935 and 960 MHz is used as the base station transmitting frequency (down link) and the frequencies between 890 and 915 MHz are used as the base station receiving frequency (up link).Data speeds up to 9.6 Kbit/s.

PTMR

Trunk radio systems can be operated as local systems with only one base station or as area-wide (cellular) systems with cell sizes from 3km up to 25km, e.g., in metropolitan areas with 6km diameter of the cells .Data transmitted at 1.2 Kbit/s.

Recommendation for PTMR, which are operated by large groups, such as port authorities, automobile manufacturers, airline companies and the police. Requires a license from the appropriate government department. And then it is lower than GSM costs and coverage is limited.

Assumption and choice

        Assumption to the Task 3, according to the scenario, the police department needs to connect each other. So, I search two- way radio communication. Many different kinds of two way radio communications. I represent GSM and Walkie-talkie (PTMR). GSM is popular phone line in Myanmar and the whole world. Most of people can use to connect each other by using GSM. But, Walkie-talkie can use government department such as police department, air port and private is Business Company such as hotels. I recommend walkie-talkie (PTMR) for the police department.

Review of work, weakness and improvement

According to the Task 3, it is rather difficult for me. But I can a little search in the internet website and Enterprise Networking. But, I can't know exactly how to use about frequencies in GSM and Walkie-talkie. So, this task is not consistency. And then, where can be find allocation of frequencies in Myanmar for two way radio communication. Besides, I need to know for legal requirement for GSM and Walkie-talkie. So, the requirement information is available from the public Exchange. These requirement is written for own writing. But that is no exactly. But I can find from the internet the frequencies for GSM and walkie-talkie. For task 3 is rather difficult and more time taken. I got much knowledge about two-way radio communication.

Recommendation for PBX system, a private branch exchange (PBX) allows several trunks (outside lines) from the central office to be shared and the switching for selecting these lines is within the PBX. A PBX is sometimes referred to as a phone switch.

And then this service is support the shared and switching for selecting these lines. PBX system selects external lines and then PBX has a central processor and a switchboard console. PBX system is to connect any internal extension to any external line and to allow internal extensions to connect to each other. So this service can be used the larger companies that need more capabilities.

Assumption and choice,

Assumption to the Task4, It is present the phone line. The phone line can be used for the police department. We represent two- types about the phone line that is PBX (Private Branch Exchange and another is KTS key telephone System). I recommend PBX (Private Branch Exchange) for the police department.

Review of work, weakness and improvement

        According to the Task 4, I can find in my enterprise networking subject and internet website. I need to know how to operate each system and equipment from each system. So, I need to search from the internet. The internet is showing equipments how many included. And then, I got operating system cost and equipment cost. The task 4 assignment is support for my exam. For my overall review the Enterprise Networking assignment is not easy for me. And then, I have no enough practical. Nevertheless, this Enterprise Networking assignment can get much knowledge.

Reference

Web Reference

  • (www.BrainBell.com, www.Buzzle.com, www.myantel.net.mm, www. Mobile Radio Networking.com, www.Private Public Exchange.com)

Book Reference

  • (Guide to Networking Essential Fifth Edition, Enterprise Networking and Network+)

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