Advantages And Disadvantages Of Network Media Information Technology Essay

Advantages And Disadvantages Of Nedeucerk Media Information Technology EssayIm a student of IADCS accessed by NCC Education at Myanma Computer Comp some(prenominal) in Yangon. Ive to study quaternion core subjects and four elective subjects. In attempt Networking Assignment, we have to do handing over and sit exam to achieve that diploma.This fitting is intended to develop slightly of the heart features of the network and communion to point up the theoretical and practical discretion of the tools and techniques connected with initiative networking. The tasks in this assignment can be more explored in categorize to acquire advantage of the additive sophisticated features of the network much(prenominal)(prenominal) as teleph wiz dust, bipartizan communication theory and network topologies.Acknowledgement first of all I would similar to be grateful NCC Education for improving calculating machine knowledge by prepa forebode this assignment. convey overly to my lecturer, U AUNG ZAW MYINT for his excellent management in a practiced effect. And too, special gratitude to my colleagues with their support do this assignment success sufficienty. Finally, I wish to widen a deepest thanks to my p bents who confident me to come to an end this assignment effectively.Task 1How the topologies oerateIn networking terms, topology refers non just now to the carnal layout of its calculators, melodys, and former(a) resources, but as well as to how those components communicate with individually different. A networks topology has a significant effect on its performance and festering potential. at that place is another(prenominal) terms that fit into topology scheme ar Ethernet and token ring, these are slightlytimes referred to as LAN topologies. The media access method Ethernet uses in a shared-media environment (a dianoetic bus). Token ring networks have a physical star topology but function as a logical ring. All network designs today are based on th ree simple physical topologies bus, ring, and star. carriage network topology consists of a series of computers connected along a single credit melody of descent segment. If this cable fails, the entire network crashes.Fig 1-1 Bus Network TopologyComputers connected to form a coil 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 community point (hub). principal topology doesnt specify how signals should travel from computer to computer, only that cables connect computers to a central device.Fig 1-3 Star Network topologyAdvantages and disadvantages of network mediaMedia casingsAdvantagesDisadvantagesUTP(Twisted braces cable)least expensive,easy to install,widely available and widely usecan over only a limited distance,susceptible to handicapSTP(Twisted opposecable)reduced crosstalk,limit the effects of external interferencemore insubordinate 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 bandwidth than fiberInstallation expenses are lofty,Difficult to work with,is not supported 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 channelize through thirster distanceThe nigh expensive form of cabling,expensive to install ,difficult to terminate testimonyI need to recommend mount star network and twisted pair cable (UTP) for the fol down in the mouthing reasons.Star topology is the relative ease of troubleshooting because all computers connect at a central location an administrator can quickly and slowly isolate network problems involvi ng a single device or cable segment without affecting other devices.Twisted pair (UTP) cable is the common use for star network topology. In UTP cabling, category 5 (cat5), category 5e (cat 5e), category 6 (cat 6) are by far the about popular types. UTP is particularly prone to crosstalk. It is utilize for surround system and two-way communication. UTP is common in most office buildings and other work environments.Task 2Task-2Internet servicesThe internet services erect for Communication, Information and File transmission all around the world. The following appliance are the most unremarkably use for internet services.Simple Mail Transfer communication theory protocol (SMTP) -responsible for transferring e-mail.File Transfer Protocol (FTP) -use for shoot down transfer and manipulation servicesHypertext Transfer Protocol (HTTP) -use to transfer Web pages from a Web boniface to a Web browser.Hypertext Transfer Protocol Secure (HTTPS)- use to access linked documents on the p opulace Wide Web that are located on a secure server.Post Office Protocol (POP3) specifies how e-mail clients can identify itself to the server and request that mail messages be made available to the user. radio link speedsThe conjunction speeds that are suitable for the above services are as follows runSpeedsInformation ascorbic acid KbpsCommunication28 Kbps(mail)Video conferencingjust 384 KbpsFile transmissionover 1 MbpsExamples of ISP in our out provinceishMyanmar 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 different kind of Broadband service (high speed, additional piece options) like Broadband Wireless, ADSL or IPSTAR. Depending on your locality, your current telephone trend connection, your work out and your requirements, Myanmar Post and Telecommunication can advice you which Access Service go forth 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.RecommendationBy 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 satellite and broadband wireless technologiesTo ensure network flexibility backup multiple service type ranging from basic articulation 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-party utter communicationA full-duplex is data transmission in both two directions at the like time. Land-line is a good example of full-duplex communication in a telephone networks since they entrust both directions of crabers to speak and be heard in the same time. Exampl es phone, industrious send for, etc. A half-duplex system supports the communication for two directions, but only one caller can speak at a time. If one caller transmits 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 radio.DECT (Digital Enhanced Cordless Telecommunications)DECT is not only used mostly in house/miniature office systems but also accessible in versatile PBX systems used medium and enterprise businesses. This system can be utilize for cordless phones. Voice 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 1880megahertz, 1900 megacycle per second, 1910MHz, 1920MHz, and 1930MHz.GSM (Global System for Mobile Communication)GSM has been continua lly improved to offer platforms that distribute broad range of mobile services. Where the industry started voice calling, thither is a powerful platform able to mobile broadband and multimedia services. Its system is now utilized for 219 countries and more than three billion people are victimization 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 in that respect is a maximum power output of 2W. wakeless RequirementsIn our uncouth, 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 perhaps 25 channels existing o n that tower. This central antenna meant that the phone infallible a powerful transmitter big enough to transmit 40 or 50 miles (about 70 km). It means that not some people will use radio telephones there just were not enough channels. The brilliance 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 national Communication Commission use in DECT and cordless phones.43-50MHz (base 43.72-46.97MHz, hand entrap 48.76-49.99MHz allocated in 1986 fir 10 channels, and ulterior 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 gigacycle per second (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 New town eruption discussion section is one of the Government Association, it will not need licenses for communication. In our nation, Myanmar, the national radio communications controller Ministry of Defense control the reunion of radio frequencies. Radio 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 inside FCC rules and conventions is the liability of the actual end user. The FCC can fine organization 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) letdown to comply 1,2031 deadline whitethorn result in annulment of licensemust be capable of operating(a) in 6.25 KHz modeactivate on 25 KHz channelscost of position up and operating systemHandsetsType of translationCosts KIRK 7010 HandsetIncludes battery, excludes charger and power go forth 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 draw ins ConnectorsType of DescriptionCostsSafety communication channel with Connector for KIRK 4020, 4040, 4080 handsets 15,00Safety Line Connector for KIRK 4020, 4040, 4080 handsets 2,00LicensingT ype 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 DescriptionCosts autopsy Service, One Year, KIRK 2010, 4020, 4040, 5020,5040 handsets 18,00Premier Service, Three 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 stations to support building, it communicate with public telecoms network.32 K min/s of net bit rate, that low for data communication.With good range (up to 200 meter insides and 6 kilometre spending directional antenna remotes, data rates of somewhat 500 Kbit/s. DECT emerged one time to be a best unusual to Wi-Fi.DECT activates in 1880-1900MHz band and defines 10 channels. Each base station framework offers 12 duplex communication channe ls 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 systems or video dispatchers, Bluetooth equipment, baby 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 Telecommun ications) for two-way voice communication for the following effectsseveral(prenominal) 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 quite of a base station. The supererogatory handsets do not need extra telephone sockets or extra transceivers.Capability to make internal (intercom) calls between handsets.Broaden series talk-time, sometimes available to 24 hours.married cordless telephone, employing a solo base station to attach one or more handsets to the civil telecoms net, which is now accessible.Civic access, employing large numbers of base stations to offer elevate ability manifestation or inner-city area treatment as part of civic telecoms net.Unlike the GSMstandards, does not identify any internal facets of the preset network itself. Connectivity to the preset network which might be of a lot of sieve 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 parts of requirements for Fire Department. Satellite phone are required for a serious chance such as a major terrorist attack or war and hence line phone and PBX system are inevitable. For this department, four line phones are compulsory at least and four satellite phones for Chief Fire Officer and three watch officer. For each firefighter, the continuations 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 signaling medium connecting the users telephone apparatus to the telecommunications network, and usually also implies a single telephone number for billing purposes reser ved 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 obscure 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 immune carrier system. Moreover there are connecting with jacks 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 cheaply 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, modem s, 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 the VOIP PBX systemFree internal calls take into account virtual incoming numbers to breaking long distance barriers and virtual call centers on anywhere. well and quick implementation within the existing PBX infrastructure can be gained with inexpensive Analogue telephone set 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. personal compu ter that use for data processing and control.Many cards such as Logic, switching and control, power and sound off equipments for PBX operation.Phone Handsets and stations called lines.Telco trunks to communicate public phone network at the outside.The hooker is allowed by switchboard to control 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 query 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 totally amount, four line phones and PBX station and services charges are almost $ 9,200.d) Costs of Operating for monthlyNo.T ype of DescriptionPrices1234Phone Bill for four lines and extensions monthlyPBX hustler 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 requirements. 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 be 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 commun ication can be extremely serviceable 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 handheld 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.Can 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. Hand-held 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 monit ors, 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 smart setPyay RoadReport Title Recommendation from the view of network engineers for Fire DepartmentThe Fire Department has been restructured and is opening a new headquarters 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 install ation 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 services, 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 costs and equipment costs. I suggested the limitation of each system.Moreover, I explain 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 e vent 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)