Advantages And Disadvantages Of Network Media Information Technology Essay

Advantages And Dis returnss Of Network Media Information Technology EssayIm a student of IADCS accessed by NCC Education at Myanma Computer Company in Yangon. Ive to think four core subjects and four elective subjects. In Enterprise Networking Assignment, we have to do handing over and sit exam to achieve that diploma.This assignment is int barricadeed to part some of the heart features of the network and conversation to point up the theoretical and practical understanding of the tools and techniques marryed with enterprise networking. The tasks in this assignment digest be more explored in categorize to acquire advantage of the additional sophisticated features of the network such as teleph star system, two-way communication theory and network topologies. quotationFirstly I would similar to be grateful NCC Education for improving computer knowledge by preparing this assignment. Thanks also to my lecturer, U AUNG ZAW MYINT for his excellent cargon in a practiced effect. And al so, special gratitude to my colleagues with their embolden made this assignment successfully. Fin unadulteratedlyy, I wish to widen a deepest thanks to my p atomic number 18nts who confident me to come to an end this assignment effectively.Task 1How the topologies oerateIn networking terms, network topology refers not exactly to the tangible layout of its computers, cables, and other resources, but also to how those components communicate with each other. A networks topology has a significant effect on its performance and growth potential. There is another terms that fit into topology scheme are Ethernet and token ring, these are sometimes referred to as LAN topologies. The media access method Ethernet engages in a shared-media environment (a logical bus). Token ring networks have a physical whiz topology but function as a logical ring. All network designs today are cup of tead on three simple physical topologies bus, ring, and star. agglomerate network topology consists o f a series of computers connected along a single cable segment. If this cable fails, the entire network crashes.Fig 1-1 Bus Network analysis situsComputers connected to form a loop create a ring topology network. A typical single-ring network fail if one computer in the ring fails, but a dual-ring network can operate around any such failure.Fig 1-2 Ring Network TopologyA star network topology describes computers connected by cable segments to a central connection point (hub). Star topology doesnt specify how signals should locomotion from computer to computer, simply that cables connect computers to a central device.Fig 1-3 Star Network topologyAdvantages and disadvantages of network mediaMedia fictitious charactersAdvantagesDisadvantagesUTP(Twistedpair cable)least expensive,easy to install(a), widely subprogramal and widely usecan over only a limited distance,susceptible to interferenceSTP(Twistedpaircable)reduced crosstalk,limit the effects of foreign interferencemore resist ant to EMI than Thinnetor UTPmore expensive than UTPdifficult to work with,can over only a limited distance,more fragile than UTP cablesCoaxialCableless susceptible to EMI interference than other types of copper mediaLess mountainwidth than fiberInstallation expenses are lofty,Difficult to work with,is not back up for some network standards (eg. Token ring),more susceptible than fiber optic cableFiber-opticcableis not susceptible to EMIresistant to interference as any media can get,can transmit through longer distanceThe most expensive form of cabling,expensive to install ,difficult to terminate testimonyI want to recommend setting star network and twisted pair cable (UTP) for the following reasons.Star topology is the relative ease of troubleshooting because all computers connect at a central location an administrator can quickly and easily isolate network problems involving a single device or cable segment without affecting other devices.Twisted pair (UTP) cable is the common u se for star network topology. In UTP cabling, syndicate 5 (cat5), category 5e (cat 5e), category 6 (cat 6) are by far the most popular types. UTP is particularly prone to crosstalk. It is used for telecommunicate system and two-way communication. UTP is common in most office buildings and other work environments.Task 2Task-2Internet servicesThe internet services provide for communion, Information and File transmission all around the world. The following appliance are the most commonly use for internet services.Simple Mail Transfer protocol (SMTP) -responsible for transferring e-mail.File Transfer protocol (FTP) -use for file transfer and manipulation servicesHypertext Transfer Protocol (HTTP) -use to transfer Web pages from a Web server to a Web browser.Hypertext Transfer Protocol Secure (HTTPS)- use to access linked documents on the World Wide Web that are located on a secure server.Post view Protocol (POP3) specifies how e-mail clients can identify itself to the server and request that mail messages be made available to the user.Connection speedsThe connection speeds that are suitable for the above services are as followsServicesSpeedsInformation100 KbpsCommunication28 Kbps(mail)Video conferencingjust 384 KbpsFile transmissionover 1 MbpsExamples of ISP in our countryMyanmar Post and Telecommunication (http//www.mpt.net.mm/mpt/index.htm)Myanmar Post and Telecommunication offers a variety of access services from dial-up connection (low speed, low cost) like Internet Dial-Up Account or Pre-paid Access Kit to contrary kind of Broadband Services (high speed, additional section options) like Broadband Wireless, ADSL or IPSTAR. Depending on your locality, your current tele band boundary connection, your budget and your requirements, Myanmar Post and Telecommunication can advice you which Access Service will suit you best. To adapt the Access Services even more to your personal wishes you can choose out of different user plans for each service.Recommenda tionBy any way, we have to choose Myanmar Post and Telecommunication because it is not only the only ISP in Myanmar but also a Government Association.It aims thatTo rapidly build up the market by taking advantage of high capacity transmit and broadband wireless technologiesTo ensure network flexibility supporting multiple service type ranging from basic verbalize to advanced multimedia streaming.To provide complete communication service to anybody, anywhere in Myanmar by achieving 100% network converge nationwide.Task 3Task- 3Method for Two-way phonation communicationA full-duplex is data transmission in both two directions at the same time. Land-line is a good example of full-duplex communication in a recollect networks since they allow both directions of call optioners to speak and be heard in the same time. Examples Telephone, Mobile Phone, etc. A half-duplex system supports the communication for two directions, but only one caller can speak at a time. If one caller transm its the signal, another caller must wait for the transmitter to stop transmitting. Antennas are of one of the type of trans-receiver that transmit and receive. Examples walkie-talkie style two-way tuner.DECT (Digital Enhanced cordless Telecommunications)DECT is not only used mostly in house/ light office systems but also accessible in various PBX systems used medium and enterprise businesses. This system can be utilized for cordless phones. contribution applications are usually common nowadays. Data applications be, but have been covered by Wi-Fi. 3G cellular (WCDMA) is absolutely full with both DECT and Wi-Fi for not only voice but also data. DECT operates on different frequencies 1880MHz, 1900MHz, 1910MHz, 1920MHz, and 1930MHz.GSM (Global System for Mobile Communication)GSM has been continually improved to offer platforms that distribute broad get of smooth services. Where the industry started voice calling, there is a abilityful platform able to mobile broadband and multime dia services. Its system is now utilized for 219 countries and more than three billion community are using it. GSM is the industry standard for mobile voice and data. GSM is one of the cellular technologies that used to transmit the signal and data services. GSM activates on four different frequencies 850 MHz, 900 MHz, 1800 MHz and 1900MHzs. This phone system uses transmission of digital and there is a maximum power output of 2W.Legal RequirementsIn our country, MPT (Myanmar Post and Telecommunication) supports mobile communications plan and agree to DECT (Digital Enhance Cordless Telecommunication) technology.Allocation of frequencies for two-way voice communicationIn the radio-telephone system, there was one central antenna tower per city, and mayhap 25 channels breathing on that tower. This central antenna meant that the phone needed a powerful transmitter big enough to transmit 40 or 50 miles (about 70 km). It means that not many people will use radio telephones there just w ere not enough channels. The hotshot of the cellular system is the division of a city into small cells. This allows extensive frequency reuse across a city, so that millions of people can use cell phones simultaneously.There are different frequencies operate with the Federal Communication Commission use in DECT and cordless phones.43-50MHz (base 43.72-46.97MHz, handset 48.76-49.99MHz allocated in 1986 fir 10 channels, and later 25 channels, FM system)1.7MHz (1.64MHz up to 5 channels, AM system)900MHz (902-928 MHz, allocated in 1990)1920-1930MHz (DECT Cordless Phone)1.9 GHz (DECT Phone Standard)5.8GHz (allocated in 2003 due to crowding on the 2.4GHz band).2.4GHz (recently MPT allow)Licensing Requirements for two-way voice communicationAs Newtown muster out Department is one of the Government Association, it will not need evidences for communication. In our nation, Myanmar, the national radio communications controller Ministry of Defense control the reunion of radio frequencies. R adio frequency licenses are not usually issued free of charge and the cost of the license can be different greatly depending on country and type of usage. Operating within FCC rules and conventions is the li aptitude of the actual end user. The FCC can fine fundamental law up to $10,000 per day for failure to comply with the rules and conventions Licensing is an essential piece of the conundrum, and as vital as any other detail when renting 2-way radios.operate on channels with a bandwidth of 12.5 KHz or less (narrowband)disappointment to comply 1,2031 deadline may result in annulment of licensemust be qualified of operating in 6.25 KHz modeactivate on 25 KHz channels represents of setting up and operating systemhandsets compositors case of DescriptionCostsKIRK 7010 HandsetIncludes battery, excludes charger and power supply 250,00KIRK 2010 Handset, EU VersionIncludes battery, charger, power supply, belt clip and belt clip connector 92,00KIRK 4040 HandsetIncludes battery, excludes charger and power supply 274,00Handset accessories Power SuppliesType of DescriptionCostsPower Supply EU for KIRK 5020, 5040, 6020, 6040, 7010, 7020, 7040 handsets 15,00Power Supply EU for KIRK 4020, 4040, 4080 handsets 10,00Handset accessories USB CablesType of DescriptionCostsUSB Cable for KIRK 5020, 5040, 6020, 6040, 7010, 7020, 7040 handset chargers 15,00Handset accessories ChargersType of DescriptionCostsCharger for KIRK 4020, 4040 handsets 15,00Charger for KIRK 4080 handsets 31,00Charger for KIRK 5020, 5040 handsets 15,00Handset accessories Safety airs ConnectorsType of DescriptionCostsSafety Line with Connector for KIRK 4020, 4040, 4080 handsets 15,00Safety Line Connector for KIRK 4020, 4040, 4080 handsets 2,00LicensingType of DescriptionCostsKWS600v3 Multi Cell License 206,00KWS6000 User License, up to 30 users 0,00KWS6000 User License, up to 150 users 736,00KWS6000 User License, up to 500 users 1.656,00ServicesType of DescriptionCostsPremier Service, One Year, KIRK 20 10, 4020, 4040, 5020,5040 handsets 18,00Premier Service, lead Years, KIRK 2010, 4020, 4040, 5020, 5040 handsets 42,00Premier Service, One Year, KIRK 4080 handset 48,00Premier Service, Three Years, KIRK 4080 handset 116,00Limitation of each methodLimitations of DECTBy using large varies of base moves to support building, it communicate with public telecoms network.32 Kbit/s of net bit rate, that low for data communication.With good range (up to 200 meter insides and 6 kilometre disbursal directional antenna outsides, data rates of approximately 500 Kbit/s. DECT emerged one time to be a better unusual to Wi-Fi.DECT activates in 1880-1900MHz band and defines 10 channels. Each base station framework offers 12 duplex communication channels with one time fit occupying any of channels.Interference-free wireless operation to approximately 100 meters outdoors. Operates clearly in common crowded domestic radio traffic situations. For example, generally resistant to intervention from Wi-Fi s ystems or video dispatchers, Bluetooth equipment, baffle monitors and other wireless devices.Limitations of GSMData transfer rates will reach up to 171 kbps with General Packet Radio Service which not only splits the mobile call into packets but also allows each phone to use several channels.Technical limitations force a set of maximum cell site range of 35 km of GSMData speeds up to 9.6 Kbit/s are available.Wavelength 10 Meter and above, frequency range 890-915MHz (mobile transmit) and 935-960MHz (base transmit).External Interference There is another transmitter outside the network such as TV transmission, Railway Station frequency, and microwave links.RecommendationI want to recommend setting DECT (Digital Enhanced Cordless Telecommunications) for two-way voice communication for the following effectsSeveral handsets can be use in each base station and each phone line socket. This let several cordless telephones to put in the region of house, all in action with the same telephone jack. There are a battery charger stations in the add handsets instead of a base station. The extra handsets do not need extra telephone sockets or extra transceivers.Capability to make privileged (intercom) calls between handsets.Broaden series talk-time, sometimes available to 24 hours.Matrimonial cordless telephone, employing a solo base station to attach one or more handsets to the civic telecoms net, which is now accessible.Civic access, employing large numbers of base stations to offer elevate ability construction or inner-city area treatment as part of civic telecoms net.Unlike the GSMstandards, does not identify any internal facets of the planned network itself. Connectivity to the preset network which might be of a lot of separate types is made through a base station to come to an end the radio link, and a gateway to attach calls to the preset network.Task 4Task-4Telephone System available in our countryTelephone system is one of the important part of requirements for inflame Department. air phone are needful for a serious concomitant such as a major terrorist attack or war and indeed line phone and PBX system are needed. For this department, four line phones are needed at least and four satellite phones for Chief conflagration Officer and three watch officer. For each firefighter, the extensions of line cordless phones are required to call form the center via two way voice communication.Line PhoneA telephone line is a single-user circuit on a telephone communication system. These refers to the physical wire or other augury medium connecting the users telephone apparatus to the telecommunications network, and usually also implies a single telephone number for billing purposes reserved for that user. There must be wires to connect with line phone. These wires connect with Local exchange via trunk lines. These wires were generally copper, although aluminum has also been used, and were carried in balanced pairs separated by about 25 cm (10) on poles above the ground, and later as twisted pair cables. Nowadays, modern lines may run underground, and may carry analog or digital signals to the exchange, or may have a device that converts the analog signal to digital for transmission on a carrier system. Moreover there are connecting with elevate RJ11 jack for the departments and homes.Private branch exchange (PBX) systemPBX is also an exchange system for telephone. This exchange will serves for Fire Department to communicate easily and stingily within the Department. It makes connections among the internal phones and then connects them to PSTN (public switched telephone network) by using trunk lines because there is incorporation with phones, fax machines, modems, and more. The extension is used to communicate with each other. The PBXs advantage was cheap for internal phone calls Now PBX became popularity and it started the services such as hunt groups, call forwarding, and extension dialing etc.The advantages when using t he VOIP PBX systemFree internal callsAllow virtual launching numbers to breaking long distance barriers and virtual call centers on anywhere.Easy and quick implementation within the existing PBX infrastructure can be gained with inexpensive Analogue Telephony Adapters that will convert signals from your existing mostly analogue phone lines into VoIP extension.DisadvantagesDependent on internet connectiondamageable in the case of power outagesfor emergency calls, the system cannot be useda) The main equipment that are needed for Fire DepartmentThe system components for PBX station are the following.Cabinets, vaults, closetsAnother housingsWires for interconnectionThe PBXs switching network.Microcomputer that use for data processing and control.Many cards such as Logic, switching and control, power andRelated equipments for PBX operation.Phone Handsets and stations called lines.Telco trunks to communicate public phone network at the outside.The operator is allowed by switchboard to c ontrol incoming call.For electricity, High performance UPS (Uninterruptible power supply)b) The features of PBX systemThe following are main features in PBX system.To dial other extensionsTo dial outside linesTo make an enquiry call to another extension whist connected to an external callTo transfer the external call to the extension where an enquiry call had just been madec) Cost of equipments and installationEquipments CostsInstallation CostsFor each Line Phones, Fire Department will pay $1,600 and PXB installation is $ 2,000. The services charges are estimating $ 800. So alone amount, four line phones and PBX station and services charges are almost $ 9,200.d) Costs of Operating for monthlyNo.Type of DescriptionPrices1234Phone Bill for four lines and extensions monthlyPBX Operator SalaryBill services for phone companyPBX equipment maintenance services$ 350$ 200$ 25$ 75Total Amount$ 650RecommendationFor Fire Department, telephone system is one of the important parts of requirement s. Line phone and PBX system are needed. And then, satellite phone are required for a serious incident such as a major terrorist attack or war. For this department, four line phones are needed at least and four satellite phones for Chief Fire Officer and three watch officer. For each firefighter, the extensions of line cordless phones are required to call form the center via two way voice communication.Task 5Task-5If the Newtown has no electrical power or fixed telephone lines organism broken, there should be an emergency using of appliance. We can use not only mobiles, walkie-talkies, and satellite phones but also generators which has the voltage of over 6600kva.Satellite CommunicationSatellite communication can be extremely useful for the users who are situated in vastly remote areas, and cannot access a broadband connection. Satellite receivers on the ground consist of satellite telephones, mobile reception, direct-to-home (DTH) satellite equipment, equipment in aircraft and han dheld devices.Two-way voice communications are available.Data rates 64 Kbit/s.The satellites provide a relay link to the home land earth station from the mobile terminal.Mobiles communications (GSM)Two-way voice communications are available. domiciliate transmit 10 meter and above. Frequency range 890-915MHz (mobile transmit) and 935-960MHz (base transmit).It is ideal for emergency services and all kinds of personal communications.Walkie-talkiesTwo-way voice communications are available. hold transceivers can use to communicate between each other, or to vehicle-mounted or support stations.Maximum range is around 2 miles (3kilometers).Frequency range 49 MHz band (shared with cordless phones, baby monitors, and similar devices) as well as the 900 MHz band..Task 6Task-6Report for Fire DepartmentTo Mr. STER BERD November 14, 2010(Chief Officer, Fire Department)Newtown, Green Road, No. 1111 B.From Ms. KHIN SANDAR PHYO KHINE(Network Engineer)Network Department, Red Links CompanyPyay Roa dReport Title Recommendation from the view of network engineers for Fire DepartmentThe Fire Department has been restructured and is opening a new home building in the Newtown. I have to demonstrate an understanding of the network requirements for a new headquarters including a computer network, telephone system and two-way voice communications with staff on call in fire engines and fire department cars.Firstly, I think star topology is suitable for network design. Because star topology can be management easily and locate problem easily and then it is more expand than Bus and Ring topology. Moreover, in my opinion, I think UTP is more able to use for star topology. Due to cheap, easy installation and widely available and widely use.Secondly, I suggested about the internet connection requirements for the Fire Department. Our age became the age of internet. For Fire Department, it is needed to know the information of fire and to be contact easily. Therefore, I described Internet serv ices, required connection speed and Internet services providers (ISPs) and its prices for requirements.And I said the methods could implement for two way voice communication. There are two kinds of it such as full duplex and half duplex. I had estimated of cost for setting up and operation system including licensing cost and equipment costs. I suggested the limitation of each system.Moreover, I excuse the telephone systems available in our country for single-site organization like Fire Department. In the section, I explain the line phone, PBX for extension and satellite phone. The main equipments, features, costs and costs operation the system are explained.In this section, if there is an event of a serious incident such as a major terrorist attack or war, I suggested how can work the operation of Newtown having no electrical power and fixed telephone lines being broken.Sincerely,KHIN SANDAR PHYO KHINEKHIN SANDAR PHYO KHINE(Network Engineer)