A small network, limited to a single collection of machines for one or more cables or other peripheral equipment, can be called a local area network.
Before designing the network, we need to understand the various topologies. There are two topologies, physical and logical topologies. The physical topology refers to the configuration of cables, PC, printers and other peripherals. The logical topology is used to pass the information between these devices. For examples, two types of LAN topologies, peer to peer and client-server are logical topology. Depending on the use of connectivity, there are 6 types of topologies:
Bus Topology
Ring Topology
Star Topology
Mesh Topology
Tree Topology
Hybrid Topology
But normally traditional core topologies are Bus, Ring and Star. Other topologies are extended from those of three.
Bus topology
Figure Bus Topology
Bus topology is the most preferably for using in Local Area Network. Bus network is easy to set up and expand. If one node is failed, the other nodes are still working.
A series of computers connected along a single cable segment in bus topology.
A bus topology is based on a central communication line.
On both end of cable, there is a terminator for preventing signals bounce on a physical bus.
The terminator acts the absorbing all electronic signal that reach it.
Transmission of data are use Ethernet
Cable are limit length
When data flowing the network may slow down
It use in IEEE 802.11
Ring topology
Ring is better performance than bus topology.
Signals typically travel in only one direction around the ring.
The data can be transmitted on only one pathway between the connected nodes.
If one of the node is added, removed and change of device can affect network.
Until the sending data is reached the destination, cannot send another data at that topology.
When one of the nodes transmits the data, and sends it around the ring to begin the process again.
Token Ring use in a ring topology which is the data sent from one machine to the next around the ring until it ends. It uses a token passing protocol which is that a machine can only use the network under controlling of the Token; this ensures that there are no collisions because only one machine can use the network at any given time.
16Mbps is the standard ring speed these days
It use in IEEE 802.11
Figure Ring Topology
Star topology
Figure Star Topology
Star topology is the most suitable for used in homes, offices and small networks.
All the nodes are connected at the same point, which is central node such as a switch and hub. All transfer data are passed through this hub.
When network signal are meet with cable failure, can be affected at only one computer
When central point have problems, can be affect the entire network.
Data transfer rate may be slow because of long distance of cable.
In star network, the commonly useful cable is unshielded twisted pair (UTP) and Ethernet cables.
It use in IEEE 802.11
Task 1.2
Network medium
Network Medium is the type of cabling used in a network. There are many types of network cables used in networks today. The type of cabling can have influence on the speed of the network. So, the network medium is the most important one of the network. Some of the popular network mediums as follow:
Coaxial Cable
Twisted-pair Cable, unshielded and shielded varieties
Fiber Optic Cable
wireless media
Coaxial Cable
Figure Coaxial Cable
Coaxial Cable is type of underground cable and this is used in long distance network. Mostly Coaxial Cable is used in regional and global. Coaxial Cable consists of a single conducting core and surrounded whit three layers such as Insulation, Braided shielding and the outermost shield. This cable is used in TV antenna, Ethernet, satellite and Local area network.
Advantages of Coaxial Cable
Coaxial Cable is easy to install
Less crosstalk
Coaxial Cable is the networker's choice
Can protect external electrical, mechanical and environmental influences
This cable is susceptible to interference and attenuation than fiber-optic cable because of its shielding
Better bandwidth
This cable can be carried high speed data
Coaxial cable of 10 based5 can run at 500m lengths.
Coaxial cable of 10 based2 can run at 185 lengths.
Disadvantages of Coaxial Cable
More expensive than twisted pair cable
Not support for some network topology (e.g. token ring)
Fairly expensive than twisted pair cables
Twisted pair Cable
A Twisted-pair cable has a pair of wires twisted each other. It can be two or four sets of twisted-pair cable. This cable is used in telephone modular jack and network device. The commonly use of the jacks are called RJ-11 (4 wires) and RJ-45(8 wires).There are two types of twisted-pair cable, UTP (unshielded twisted pair cable and STP (shielded twisted pair cable).
Unshielded Twisted Pair Cable
Figure Twisted pair Cable
Advantages of Unshielded Twisted Pair Cable
Used in a variety of network
Less expensive than coaxial cable
Most flexible
Installation and maintenance easily
Less containment space than coaxial cable
Widely distributed
Disadvantages of Unshielded Twisted Pair Cable
Maximum cable length is 100 meters (Short)
Low quality signal transmission
High interference and electromagnetic reduction
Can crosstalk
Bandwidth is only 10-1000Mb
Shielded Twisted Pair Cable
Figure Shielded Twisted Pair Cable
Advantages of Shielded Twisted Pair Cable
High protection of external interference and noise
support higher bandwidth
high security
reduce crosstalk
more resistant to EMI than UTP
Disadvantages of Shielded Twisted Pair Cable
More expensive than UTP
Difficult to install
Only use in token ring
Can work only a limited distance
Fiber-optic Cable
Figure Fiber-optic Cable
Fiber-optic cable is composed of central core of optic fiber, inner sheath, Kevlar for strength and the outmost shield. This cable is a good medium for high bandwidth, high speed, and long distance data transmissions. The maximum cable length is 2 km to 100 km.
Advantages of Fiber-optic Cable
Security is better
Can used over long distance
Higher bandwidth
Low attenuation
No susceptible to EMI
No noise
High data transfer rate than other cable
Widely used
Disadvantages of Fiber-optic Cable
Difficult to terminate
More expensive
Can be crosstalk
More weight and size than other cable
Limited distance
Task 1.3
Recommendation
I'm going to use Star topology and medium for unshielded twisted-pair cable(RJ45).As using for star topology, it's easy to install, easy to troubleshoot problems, easy to connect with switch by using RJ45, can be reconfigured quickly, have better performance, don't have any disruption to the network when connecting or removing devices. As using for UTP -
Used in a variety of network
Less expensive than coaxial cable
Most flexible
Installation and maintenance easily
Less containment space than coaxial cable
Widely distributed
I hope fire department can give people well performance.
TASK2
Investigate the internet connection requirements for the fire Department.
Task 2.1 Describe the Internet services that may be required.
Task 2.2 Explain the connection speeds that are suitable for these requirements.
Task 2.3 Find examples of internet Service providers (ISPs) that can meet these requirements in your country.
Task 2.4 Make a recommendation to use one ISP based upon the services offered and price charged.
Task 2.1
Internet Services
Electronic Mail (Email)
Email is internet tools which is widely used all over the world. The function of the email is sending message form one user to another using Internet. Email does not deliver directly from the sender to recipient. Email delivery is relied on using addresses. An Internet email address is made up of two parts which is domain name and user name.
File Transfer Protocol (FTP)
FTP is an Internet protocol for copying file from one computer to another. FTP is useful for retrieving data form Internet archives. FTP is commonly used in downloading file from the server and uploading file to the server.
Voice over Internet Protocol (VoIP)
VoIP is a telephony method that can be made phone call with internet. A VoIP service is converting your voice to the digital signal that travels around the internet. This allows you to make a call directly from the computer, a special VoIP phone, or a traditional phone connected to a special adapter.
World Wide Web (www)
The World Wide Web is one of the newer applications of the Internet. The World Wide Web is commonly known as the web for viewing web pages that contains text, images, videos and other multimedia, is a system of interlinked hypertext documents accessed via the Internet. The WorldWideWeb.com is the only search engine you will ever need! Just type your search terms in the box above and click on the "Search" button. http://www.worldwideweb.com/pics/spacer.gif
Task 2.2
Connection speeds
We have to use broadband connection speed for fire department because of its secure and fast data communication. Some of the internet service must be high bandwidth. (For e.g. VoIP and Video conferencing.) We need 2Mbps for the whole department. So, I must use ADSL and WIMAX for fire department.
I will use connection speeds as follow:
internet service
Requirement for service
Minimum Speed
Recommend Speed
Remark
POP3, SMTP
128kBs
256KBs
512 is ready for file attachment
World Wide Web
HTTP, HTTPs, IPSEC
256KBs
256MBs
VOIP
VOIP
512KBs
1MBs
in traffic time 1 MBs is enough
FTP
FTP
128KBs
512MBs
512 is enough for file transfer
Task 2.3
Internet services provider
Yadanapon Teleport is a department of the development of information and communication technology in Myanmar was established in 2006, mainly members from the Ministry of Post and Telecommunications. Yadanapon teleport provide:
The best infrastructure and equipment
Incentives and opportunities for the best
The best value and benefits
The Myanmar Posts and Telecommunications (MPT), is the sole provider of telecommunication services in Myanmar. MPT is an agency of the government, operating under the Ministry of Communications, Posts and Telegraphs. The three main categories of services by MPT are Postal services, Telegraph services and Telephone services, for both domestic and international communications.
ADSL Internet Account Registration fee Rate in US$
No.
Description
Type A
Type B
Type C
Type D
Speed
256kbps
512kbps
1024kbps
1536kbps
1
Initial setup fee
1400$
1400$
1400$
1400$
2
Annual fee
60$
60$
60$
60$
3
Modem fee
100$
100$
100$
100$
4
Monthly fee
30$
60$
100$
150$
Free E-mail Accounts
1$
4$
8$
10$
Task 2.4
Recommendation
I choose Myanmar Post and Telecommunications (MPT) to configure Newtown fire departments. It quite enough connections speed to provide our fire departments. There many kind of internet service provider of MPT. I use ADSL and 2MBps of connection speed. 256 KBps for Email transfer and another 256Kbps is use for WWW and 1MBps for VOIP and 512Kps for FTB.
ADSL Internet Account Registration fee Rate in US$
No.
Description
Type A
Type B
Type C
Type D
Speed
256kbps
512kbps
1024kbps
1536kbps
1
Initial setup fee
1400$
1400$
1400$
1400$
2
Annual fee
60$
60$
60$
60$
3
Modem fee
100$
100$
100$
100$
4
Monthly fee
30$
60$
100$
150$
Free E-mail Accounts
1$
4$
8$
10$
TASK3
Investigate the methods the Fire Department could implement for two-way voice communications As a minimum include the following information:
Task3.1 How each methods work(frequencies, full/half duplex, etc).
Task 3.2 Details of the legal requirements for operating the system in your country (e.g. allocation of frequencies, licensing requirements, etc).
Task 3.3 Costst of setting up and operating the system, including licensing costs, equipment costs , etc.
Task 3.4 Limitation of each method( interference, range, etc.)
Task 3.5 Provide a recommendation for how voice communications should be set up and run including reasons for this recommendation.
Task3.1
DECT (Digital Enhanced Cordless Telecommunications)
DECT standard cordless phones use radio waves used. Connected to the sending station by the station, you can call the network. The station can be connected to the VoIP service. Previously, with the switch and the telephone exchange companies, including the DECT program. DECT can use half-duplex and full duplex communication methods. This can use a variety of means of communication (one to one, many, many). It can use of different frequencies around the world. Between the old cordless phone and DECT cordless phones The main difference is, DECT phone base station transmitters at full power continuously as long as the pulse base station / charger to the 240 volt AC outlet on the length of the microwave radiation. This means that the base station, usually on the bedside table or desk, is broadcasting a 2.4 or 5.8 GHz transmission (in Australia) whether it is the cradle charges the phone or is using the base station 300 meters. There is now a 2.4 GHz to 5.8 GHz from the progress, because in 2.4 GHz "wireless LAN" (WLAN) increase in the home and office use DECT technology. This is an increase of 2.4 GHz and therefore requires a move to a higher frequency interference or 'crowded'.
TETRA (Terrestrial Trunked Radio)
TETRA everything from specialized security services, mobile business model. It has a wide selection of data services. Time division multiple access cluster can be more efficient use of radio spectrum, but it means that operators must allocate at least a minimum of four voice channels. The system has no access to cellular frequency reuse plan, will further increase the radio carrier mode of operation required, which is the number of single-carrier wireless wide area coverage. Much lower in frequency so that longer range, allowing use of smaller number of transmitters very high level of geographic coverage, thereby reducing infrastructure costs. 4-channel high spectral efficiency of 25 kHz and without security, compared to 8 200 kHz GSM band and guard channels. High-speed project "400 km / h.
Full duplex
It can communicate both directions, work simultaneously. One party can sent data and receive data at the same time. Full duplex is enabling the electronic audio communication to approximate real life conversations. That is, multiple people can talk at the same time without quality degrading. For example, Telephone and mobile phone (1.664 channels or more). In Ethernet connection, full duplex can be seen in twisted-pair cable, two pair of the cables is used for sending packets and the others are used for receiving packets to direct connective device. The effective way of cable is collision free environment and doubles the maximum bandwidth that can support connection. No waste time because no need to retransmit the data because it has no collisions. Fully bandwidth in both side because sent and receive are separated. Station do not need to wait until the other operation is completed this transmission.
Half duplex
It provides for communication in both directions, but only one direction at the same time, work no simultaneously. The caller is beginning transmitted the data; it must be wait for stopping transmitted before replying. One party can talk at one time. For example, walkie-talkie (only one channel) and CB radio (40 channels). Only one channel is used in both broadcast and listen. A good analogy for half-duplex system would be one lane road with traffic controllers at each end. One example of half duplex; Walkie-talkie can transmit about 1 mile (1.6km) using 0.25watt transmitter. BC radio is higher power and can transmit about 5 miles (8km) using 5watt transmitter. Cell phone can operate within cells, can drive hundreds of miles and maintain a conversation the entire time because of cellular approach.
Task 3.2
Legal requirements for operating system
By recommendation of our country, we may use DECT technology. Myanmar posts and Telecommunication (MPT) is supported by mobile communication. So, we choose DECT (Digital Enhanced Cordless Telecommunications).
Allocation of frequencies
Frequency bands allocated by the Federal Communications Comission for customer include DECT e.g. cordless phones. They are-
1.7 megahertz (MHz to 178 MHz and above 1.64 to 5 channels, AM systems)
43-50 MHz (base :43.72-46.97 MHz, 49.99 MHz mobile :48.76-1986, assigned to 10 channels, then 25 channels, FM systems).
900 MHz (902-928 MHz) (1990 allocation).
1.9 GHz (1980-1900 MHz) (communications outside the United States used in DECT).
1.9 GHz (1920-1930 MHz) (in 1993 and the October 2005 distribution of U.S.).
5.8 GHz (2.4 GHz frequency bands allocated in 2003 due to congestion).
Requirements of licensing
Operating license
The operation of commercial mobile radio network requires a specific operating license. In private radio networks, Professional Mobile Radio (PMR), the interpretation of requirements license is country specific and national regular opinion should be consulted before setting up a radio communication network. Mostly case, some of the private radio system requires only a frequency license.
Radio Frequency License
The national radio communications regulator; Ministry of Defense, Myanmar is controlling the usage of radio frequencies. In the application, we must explicitly refer to (a) models and types of radio communications equipment (b) Frequency range (c) Number and unit.
Task3.3
Motorola GP328 radio
$235.00
Figure Motorola GP328radio
In the GP328 is the practical way to keep in touch professionals who need a wireless solution. Motorola's special voice processing technology and equipment, GP328 can be more clear, more clear and reliable voice quality, allowing users to keep communicating, even in noisy environments. This radio also supports an interface that allows third party developers to create applications in a single run control palette, modify or expand the radio. In Asia and the Pacific Rim. This practical radio to improve production efficiency, streamlining your radio use.
Features of GP328
Signaling - quick call, II, DTMF, part of the MDC1200
Option Board - Yes
Keyboard - None
Display - No
Emergency call button - there
Battery Life - 8 hours (high power), 10 hours (low power) - use standard high-capacity NiMH battery
U.S. military standards - the U.S. Military Standard 810C, D and E
Intrinsically Safe - Yes
Weight (g / kg) - 420gms (with standard NiMH battery)
Power Output - 5W's --136--174 MHz, 4 weeks --403--470 MHz, 450--527 MHz
Frequency --136--174 MHz / 330--400 MHz / 403 (for 16 channels) - 470 MHz / 450--527 MHz
Channel - 16
Size (x W x L) - 137 mm Ã- 57.5 mm x 37.5 mm (with standard NiMH battery)
(d) the purpose of radio communication networks.
Government is the military government in our country; they are not allowed to use the voice communication companies and individuals. But for all sectors of government organizations can use any communication system.
For our country is controlled by government agencies. However, the new town fire department is a government organization, gives us the opportunity to use any technology.
New Town Fire Department covers an area of 70 square kilometers. Therefore, we must require the use of radio base stations of our government. We will record our equipment, channel, frequency, distribution of information law. Then, we will Posts and telecommunications to the Ministry of Education.
Repeater and base station
$3000
Figure Repeater and base station
GTR ASTRO satellite radio support base 8000 ® 25 (integrated voice and data) and the HPD system. Periodontal 8000 base station in 700/800 MHz, UHF (435-524 MHz) and VHF (136-174 MHz) and hematoporphyrin in the 700/800 MHz system & D Systems IV.
G Series products are very flexible and field equipment, with today's powerful web design. G Series products offer the flexibility of field equipment upgrades, software downloaded to the future functions.
FEATURES
Periodontal 8000 includes base station functions, such as:
• Multi-site linear synchronous channel providing industry-leading radio coverage with fewer sites
• IP-based network operation
• compact, integrated hardware, the use of three rack unit chassis, enabling efficient use of web space
• Software radio can upgrade the software update to the next function
• Modular software design and software download management, and simplify future upgrades and routine service
• functional independence of the module - Field Replaceable Unit (FRU) - support hot-swappable, allowing no system downtime for maintenance and replacement, while minimizing downtime channel
• Designed for convenient services, including adjustments in significantly reduced
• No initial field-aligned multi-site or service (synchronous broadcast) or system required hematoporphyrin
• Standard battery GTR reporting and charges on the 8000 base station eliminates the need for a lot of uninterrupted power supply units (UPS) needs
Support:
• 700/800MHz
• Ultra High Frequency (435-524 MHz)
• VHF (136-174 MHz) frequency band
•
• ASTRO 25 Integrated Voice Satellite
• Data (IV & D) system
• HPD system
• ASTRO 25 satellite simulcast system
Cost on Devices
GTR ASTRO satellite radio support base 8000 - $3000
Motorola GP328 walkie-talkie - $235.00
Cost of Operating Systems
We have to pay the operation cost to network engineer and some requirement to accomplish this fire department network configuration.
Licensing Costs
We need to give license cost $70 to the government as annual fees.
Total Setting up Costs
Total setting up costs = (Equipment Cost + Licensing Costs + Installation Costs)
Task 3.4
Limitations of TETRA
Need a linear amplifier to meet the rigorous RF specifications, allowing its presence with other broadcasting services.
Mobile expensive than cellular. This is more difficult because the technology, the smaller economies, and different business models.
Data transmission, high efficiency, long range (many kilometers), but slow in the modern standard of 7.2 kilobits / per hour (3.5 kbit / slot packet data network throughput), although up to 4 into a single data channel, combined with higher interest rates to achieve slot s, and also fitting into a single 25 kHz channel bandwidth.
Limitations of DECT
Public access, the use of a large number of base stations providing public telecommunications networks as part of the scope of building.
Net bit rate: 32 Kbit / s, which for the data communication is low.
Wireless operation is only 100 meters around the outside interference. Clear common operating domestic radio traffic congestion. For example, generally free from Wi - Fi network or video transmitter, Bluetooth technology, wireless baby monitors and other equipment interference.
Task 3.5
Recommendation
Motorola is special voice processing technology and equipment. GP328 can be more clear and reliable voice quality. It allows the users to keep communicating, even in noisy environments. This radio supports an interface that allows third party developers to create applications in a single run control palette, modify or expand the radio. It provides:
Emergency call button - there
Battery Life - 8 hours (high power), 10 hours (low power) - use standard high-capacity NiMH battery
U.S. military standards - the U.S. Military Standard 810C, D and E
Frequency --136--174 MHz / 330--400 MHz / 403 (for 16 channels) - 470 MHz / 450--527 MHz
Channel - 16
And then I wish like to recommend Periodontal 8000 base station enclose repeater for Newtown fire department. It supports:
• 700/800MHz
• Ultra High Frequency (435-524 MHz)
• VHF (136-174 MHz) frequency band
• ASTRO 25 Integrated Voice Satellite
• Data (IV & D) system
• HPD system
• ASTRO 25 satellite simulcast system
So I chose this repeater and base station for the use of fire department.
TASK4
Investigate telephone systems available in your country for single site organizations like the fire Department. Pay particular attention to:
Task 4.1 The main equipment that would be installed.
Task 4.2 The features available with each system.
Task 4.3 The cost of equipment and installation.
Task 4.4 The cost of operation system.
Task 4.5 Provide a recommendation for which system to purchase including reasons for this recommendation.
Task 4.1
IP-PBX (that use packet switched method)
An IP_PBX (Internet Protocol-Private Branch Exchange) is a private branch exchange that switches calls between VOIP or IP users on local while all users are allowed by a certain number of external phone lines. Typical IP_PBX can also switch calls between a VoIP user and a traditional telephone user. An IP-PBX handles voice signals under Internet protocol, bringing benefits for computer telephony integration (CTI). An IP-PABX can exist as physical hardware, or can carry out its functions virtually, performing the call-routing activities of the traditional PABX or key system as software system. The virtual version is also called a "Soft PAPX". It provides flexibility as an enterprise grows and can reduce long-term operation and maintenance costs. These are some benefits of IP_PBX :
Enhance Customer Experience
Ability to personal communications and services to establish with your customers.
Increase employee productivity and leading to higher customer satisfaction at a lower cost.
Improve Work Force Productivity
Employees now have easier access to their associates, create opportunities and enhance work flow.
Low Total Cost of Ownership
Reduces communication and collaboration expenses.
Better control over communications expenses with constant reporting
CDMA450M System
CDMA 450M system uses 450MHz (453-467MHz). It is already used in trucking radio system and walkie-talkie radio all over the world. It is hard to clear up all the available radios and would be lot of interference in the frequency band. A mobile cellular system of primarily design is CDMA 450M system. It is hard to redevelop the fax function and public phone service. CDMA system is a self-interference system because all the users are in the same frequency band. All the users of CDMA 450M system will interfere each other because the uplink channel is asynchronous. Such the more the users increase, the higher the interference will be. CDMA 450 system use QUALCOMM CDMA technology and the key components are bought from QUALCOMM semiconductor manufacture. The customized chips from Qualcomm are very expensive and they have to pay license fee for each user terminals.
The features available with each system.
Task 4.2
IP_PBX features
These are some of the IP-PBX features;
Instant messaging which is real-time communication
Unique messaging which is single mailbox for email, fax and voice messages.
Simultaneous ring that is one number contact to the office; ordinary phone and mobile phone are ringing at the same time by registering them under one number.
Easy to switch this is no seam transfer between ordinary phone and mobile phone when in conversation.
Web/Audio Conference: allowing user to conference via Internet
Active Directory: allowing access the user for place
IP Contact Centre: securing IP platform for contact centre.
CDMA450M features
These are some of the CDMA450M features;
CDMA450M
Multiple Access/ Duplex mode
CDMA/FDD
Uplink Synchronous
Asynchronous
Modulation
QPSKã€8PSK
IP Right
US QualComm
BTS Sensitivity
118dBm
BTS transmitting power( EIRP)（Incl smart antenna gain）
43dBm（20W）
BTS power consumption
500W
Carrier Bandwidth
1.25Ã-2MHz
Types of terminals
Fixed and mobile phone
Sensitivity for terminal
104dBm
Transmitting power for terminal
24 dBm
Input voltage range for terminal
180~260V
Max. power consumption for terminal
4W
Standby Power for terminal
0.2W
Coverage of BTS
50 km
Frequency range (MHz)
453.5-457.1/463.5-467.1
Frequency efficiency(Single BTS)
18Voice CH/MHz
Frequency efficiency(multiple BTS)
12voice CH/MHz
Network complexicity
complicated
Antenna technology
Diversity reception and transmission
Services provided
1ã€basic service（voice calling, short message Fax）
2ã€Additional services ( call transfer)
3ã€intelligent service
4ã€Special service
5ã€data service（154kb/s）
Network upgrading capacity
3G mobile system
Task 4.3
The cost of equipment and installation.
IP-PBX Phone
Figure Claricom 360 IP-PBX Phone
$ 39.95
Complex phone features, call detail, configuration options are available through many of the browser from a connected PC. Custom ringtones can be downloaded from the Web server worry - of course including your personal favorite. Incoming calls will be assigned a different tone. 12 programmable keys can be mapped, respectively, according to your specific needs. The corresponding indicator will show whether your current colleagues on the phone or not.
Mini Browser
In the near-field optical microscope 360 Mini browser is now also allows you to display on the phone to access their applications right. This makes the display screen can be customized, allowing you to focus and direct access to the public phone book, press quotes, stock quotes, and more data. VPN (Virtual Private Network) connection can, of course, it is easy to implement and security. The near-field optical microscope can be easily bent Manager server to create a separate server solutions.
On security, near-field optical microscopy 360 SRTP and TLS for protection and anti-eavesdropping and malicious access and authentication data, your signal. The PoE (Power over Ethernet) and very low energy consumption will reduce your costs.
CDMA SIM card
Figure CDMA SIM card
$1500s
BlackBerry 8830
Figure CDMA hand set
$598.99
Features
the phone will work only with Verizon Wireless
BlackBerry 8830 World Edition gives you phone, email, and calendar, Web browsing and instant messaging. Then step into the greater location-based applications and services, including BlackBerry ® Maps application pre-installed GPS, *. for your video clips and music media player. Expandable memory to ensure you have your media files to your room needs. And high-capacity battery, allowing you to take full advantage of the most important.
FEATURES
Phone
E-mail and text messaging (SMS and MMS).
GPS functionality for location-based services.
BlackBerry Maps, the best way to find their own way.
Integrated address book, calendar, notes, tasks list.
Web browser.
Instant message.
Media Player. Audio and video playback in a variety of formats.1
QWERTY full keyboard.
plug the modem feature lets you use a laptop or personal computer, wireless modem devices.
speakers and voice dialing.
Bluetooth hands-free dialogue via headsets and car kits.
stereo headset functionality.
Integrated attachment viewing.
with the popular personal information management (PIM) software.
High-resolution, light sensing screen, adjustable lighting, ideal for indoor and outdoor observation level of automation.
dedicated Send, End and Mute keys, pearl-like trackball navigation system, and user-defined shortcuts.
MicroSD card expansion through memory and 64 MB of memory.
IP-PBX 310 - server class PBX
Figure IP-PBX 310 server
$ 2500
Telephone support from 5-50 (20 concurrent calls)
4 PCIx slot, a combination of analog or digital T1's
AMD Server Boards
a faster CPU and more memory
a disk drive (optional RAID redundant disk drives)
ipKVM (optional) for remote console access
Task 4.4
Cost of equipment and operation
Value
Cost
IP-PBX Phone
Claricom 360
$39.95
CDMA SIM card
$1,500
BlackBerry 8830
$598.99
IP-PBX 310 - server class PBX
$2,500
Other necessary equipments
$8000
I chose IP-PBX phone for dividing the telephone line. So, we need IP-PBX server to use IP-PBX phone. CDMA is the most suitable device because of its good frequency and the SIM card is easy to buy. Other network equipments is needed to install.
(d) Provide a recommendation for which system to purchase including reasons for this recommendation.
Task 4.5
Recommendation
For Newtown fire department, I recommended IP-PBX telephone system and CDMA450MHz phone system. For IP-PBX telephone system, we need to connect between the internal office and public switched telephone network (PSTN). We can use fax machine with the IP-PBX telephone system.
Some of IP-PBX performances are
Instant messaging which is real-time communication
Simultaneous ring that is one number contact to the office; ordinary phone and mobile phone are ringing at the same time by registering them under one number.
Web/Audio Conference: allowing user to conference via Internet
IP Contact Centre: securing IP platform for contact centre.
As the above point, I chose IP-PBX for fire department. And then I chose CDMA because of its mobility and can take easily. CDMA is one of the popular mobile phone in our country and widely available. This frequency range is 453.5-457.1/463.5-467.1.So I recommended the CDMA for chief officer.
TASK5
The Fire Department (needs to remain operational) in the event of serious incident such as a major terrorist attack or war. Explain the measures you would allow the Fire Department to operate in the event of Newtown having no electrical power and fixed telephone lines being broken.
The fire department is one the important office so we need to operate this office 24 hours even when disturb is come out. So, we need to maintain electrical power and telephone lines. At first we need to set up generator which can give us to continue our department's electricity and all PC and communication device can fill power by using it. So, we have to use high voltage generator. And then we have to use UPS which can give our PC stability and do not need to power off. That can maintain office computer because of its power. It supports when the electricity is break down immediately. The advantage is that the official information cannot be losing due to the electricity and some disturb. After that we need to connect all of the IP-phone so we need to supply power to the IP_PBX server. I use inverter for this server and some are charging for all phones, I mean CDMA Phone. If the telephone lines are cutting off, we have to use satellite phone instead of other devices.
CATERPILLAR OLYMPIAN GEH220 generator
Figure CATERPILLAR OLYMPIAN GEH220 generator
Apollo 1200VA UPS Line Interactive
Figure Apollo 1200VA UPS Line Interactive
$520
4000W DC-AC POWER INVERTER PEAK 8000 WATT
Figure 4000W DC-AC POWER INVERTER PEAK 8000 WATT
$175
4,000 meters is the SIM card migration of people who need laptop computers, cell phones, cameras, televisions and other electronic devices.Compact, light weight, SIM card easily connect to vehicle power 4000 the ideal "of the battery.
4000 watts continuous power adaptability and eight thousand watts
Automatic protection against overload, over temperature and low / high battery conditions
Application: home and office appliances, power tools and portable equipment, cars, boats, solar power systems ...
Two AC three-phase grounded AC outlet socket for connecting multiple loads
High product and need more power to start the rapid deployment capability
Iridium 9555 Satellite Phone
Figure Iridium 9555 Satellite Phone
$1,395
Iridium 9555 will work only with Windows XP (32 bit) and Windows Vista or Windows 7 (64 bit).
9555 features a compact area of Iridium streamlined portability.
of the box, intuitive user interface features
water, shock and dust unmatched durability
enhance the function of SMS and e-mail
headset and hands-free function and integrated speakers
antenna internal storage
Mini-USB data port
Epson Stylus Photo R280
Figure Epson Stylus Photo R280
$100
I have to print out when the control centre sends details to a printer in the fire engine bay to provide written details of the incident. This print out is taken bye the watch officer.
TASK6
Create a comprehensive, professional report describing your network recommendations. This should include the details of Tasks 1-5, have estimates of cost throughout and have an executive summary at the start giving the key points.
Report
To
CEO
The fire department is restricted in Newtown and is shortly opening a new headquarters building. The headquarters will house all the communications and computer systems for the fire department. This fire department covers 70 square kilometers. It has a Chief Fire Officer who is responsible for fire fighting, rescue cases and fire prevention. And then the Chief Officer is assisted for three Watch Officers who also carry out senior duties. The Chief Officer also does the operational duties of the fire department when their watch is on duty. The three watches are on duty for 8 hours per day.
Each watch is composed of 20 firefighters and there are 3 fire engines plus one car for the Watch Officer. All vehicles require two-way communication with the control centre. The control centre has three controllers on duty at any time who receives calls from the public and other emergency services when required and maintain contact with firefighters when they are at an accident.
Newtown Department is renewing all of its networks for the new headquarters including the computer network, telephone communications and two-way communications with firefighters when they are out in the department's vehicles.
In task 1, we have to choose many topologies such as star topology, ring topology and bus topology. They are typical network topology. I chose star topology because of its benefits. It is easy to install, easy to troubleshoot problems, easy to connect with switch by using RJ45, can be reconfigured quickly, have better performance, don't have any disruption to the network when connecting or removing devices. After that, I chose the UTP cable because of it's widely use and less space for it and can easily install and flexible.
In task2, we chose MPT for Newtown fire departments. There are many kind of internet service of MPT. I use Asymmetric Digital Subscriber Line (ADSL). There are five type of ADSL. They are divided by type A, type B, type C, type D and type E. They have various speed and fees. So, I choose 2 line of Type C for need of 2Mbps. The cost of initial set up fee is 1400$, Monthly fee is 100$ and Annual fee is 60$ for one line. The modem fee is almost 100$. The MPT of the ADSL fee rate are as follows:
ADSL Internet Account Registration fee Rate in US$
No.
Description
Type A
Type B
Type C
Type D
Speed
256kbps
512kbps
1024kbps
1536kbps
1
Initial setup fee
1400$
1400$
1400$
1400$
2
Annual fee
60$
60$
60$
60$
3
Modem fee
100$
100$
100$
100$
4
Monthly fee
30$
60$
100$
150$
Free E-mail Accounts
1$
4$
8$
10$
In task3, we have to choose DECT and TETRA standard. So, I chose DECT standard because it can use cordless phones. DECT standard cordless phones use radio waves used. It is connected to the sending station by the station, you can call the network. The station can be connected to the VoIP service. DECT can use half-duplex and full duplex communication methods. This can use a variety of communication (one to one, many, many). It uses different frequency around the world. So, DECT is the most suitable for fire department. I chose the cordless phone for Motorola's GP328 because it supports an interface that allows third party developers to create applications in a single run control palette, modify or expand the radio. And then I choose GTR ASTRO satellite radio support base 8000 because it support DECT standard and it transmit ultra high frequency to connect cordless phone and it also support to extend the range of frequency to become larger. So, the fire department can use the cordless phone form the distance area because of wide transmission of frequency. I chose the cordless for 60 fire fighters. It will support the continuous connection between fire department however they were outside of the office area. They are prize of some equipment for fire department needs.
Cordless phone $235 x 60
Repeater and base station $3000 x 1
In task4, there are also two choices IP-PBX and PBX for extension of public telephone line. I chose IP-PBX for new town fire department. An IP-PBX handles voice signals under Internet protocol, bringing benefits for computer telephony integration (CTI). An IP-PABX can exist as physical hardware, or can carry out its functions virtually, performing the call-routing activities of the traditional PABX or key system as software system. Some of IP-PBX performances are
Instant messaging which is real-time communication
Simultaneous ring that is one number contact to the office; ordinary phone and mobile phone are ringing at the same time by registering them under one number.
Web/Audio Conference: allowing user to conference via Internet
IP Contact Centre: securing IP platform for contact centre.
So, IP-PBX is suitable for fire department. As using of IP-PBX, I chose the server for IP-PBX 310 - server class PBX. I chose IP-PBX phone for Claricom 360. And then I chose CDMA450MHZ system. It is already used in trucking radio system and walkie-talkie radio all over the world. It is popular in our regional use; it is widely available, widely frequency range and cheapest than other mobile phone system. So, I chose the CDMA for head officer. CDMA services provided are as follows:
Basic service (voice calling, short message Fax)
Additional services (call transfer)
Intelligent service
Special service
Data service（154kb/s）
So, I chose the CDMA handset for BlackBerry 8830.
Value
Cost
IP-PBX Phone
Claricom 360
$39.95 x 3
CDMA SIM card
$1,500 x1
BlackBerry 8830
$598.99 x 1
IP-PBX 310 - server class PBX
$2,500 x1
In Task 5 I had been used generator, UPS, inverter and satellite phone. Generator, when the electric break down it protects losing power and responsibility for the entire department. UPS is to prevent electrical break down or over voltage for computer, ADSL modern, access point and other devices. Inverter to prevent the whole electrical devices when electric breaks down and had a case at the generator. Satellite phone is to get important information when happened at internet connection or telephone system. I also use printer to print out the requirement for an emergency.
Cost of the device is
Generator $1400
UPS $520
Inverter $175
Satellite phone $1395
Printer $100x3
