Transcript 103x - BSNL Durg SSA(Connecting India)

Assignment Report
ON
Types of broadband MODEM
and there programming
SUBMITTED DURING THE VOCATIONAL TRAINING AT BSNL DURG
Under the Guidance of
Mrs. Kanchan Pandey
Submitted by
MONTH : JUNE
YEAR: 2014
ANKITA VATSA
PUSHKAR SINGH
PREETHI RAJAN
RICHA VERMA
SETHUSREE NAIR
INDEX
What is broadband modem
Types of broadband modem
Wired broadband modem
•DSL(Digital subscriber line)
•Cable modem
•PLC modem
Wireless modem
•Wi –Fi
•Wi-max
•FSO
Programming
WHAT IS BROADBAND MODEM?
• A modem (modulator-demodulator) is a device
that modulates an analog carrier signal to
encode digital information and also demodulates
a carrier signal to decode the transmitted
information.
• The broadband modem is like an ordinary
telephone modem except it connects you to a
broadband service instead of a dial-up service.
• The broadband modems are high speed
modems.It connect internet at high speed.
Types Of Broadband Modem
WIRED MODEMS
WIRELESS MODEMS
• DIGITAL SUBSCRIBER LINE
• WI-FI
• CABLE MODEM
• WI-MAX
• PLC MODEM
• FSO
WIRED BROADBAND
MODEM
1 DSL (Digital Subscriber Line): • DSL uses the existing twisted-pair telephone lines as the
access media. Over a period of time, a number of
technologies (xDSL) have been introduced to provide faster
data speeds over this medium. The various xDSL
technologies are given below.
• 1. ADSL (Asymmetric Digital Subscriber Line)
• 2. VDSL (Very High-Speed Digital Subscriber Line)
• 3. RADSL (Rate Adaptive Digital Subscriber Line)
• 4. HDSL (High Data-Rate Digital Subscriber Line)
• 5. SDSL (Symmetric Digital Subscriber Line
• 1. ADSL (Asymmetric Digital Subscriber
Line)
•
It is a form of DSL, that enables faster data transmission over copper
telephone lines than a conventional modem can provide.ADSLhas the
distinguishing characteristic that the data can flow faster in one direction
(used for download streaming) .
• 2.VDSL (Very-High-Speed DSL)
• Very-high-speed DSL (VDSL) promises even higher speeds than ADSL,
although over much shorter distances. Originally named VADSL (A –
Asymmetric) but was later extended to support both symmetric &
asymmetric. Requires one phone line and supports voice & data. It works
between 0.3-1.37 kms depending on speed. It supports upstream data
rate of 1.6-2.3 mbps & downstream data rate of 13-52 mbps.
• 3. RADSL(Rate-Adaptive DSL)
• As the name implies, rate-adaptive DSL (RADSL) modems adjust the data
rate to match the quality of the twisted-pair connection. Emerging
software should make this an automated process with little human
intervention.
• 4.HDSL(High-Data-Rate DSL)
• HDSL modem is viewed as equivalent of PCM stream(2 Mbps) and offers the
same bandwidth both upstream and downstream. It can work up to a
distance of 3.66 to 4.57 kms depending upon the speed required. It can
deliver 2048 kbps
• 5. SDSL(Symmetric DSL)
• Symmetrical digital subscriber line (SDSL) is similar to HDSL but requires only
one pair of wires. Transmission speed ranges from n x 64 kbps to 2.0 Mbps in
both directions. In this the upload and download streams are of equivalent
bandwidth.
2 CABLE MODEM
• The cable network was primarily designed to deliver TV signals in one
direction from the Head-End to the subscriber’s homes. Operators had to
upgrade the cable network so that signals could flow bi-directionally. One
spectrum is used for the signals that move from the Head-End towards the
cable subscriber. Another spectrum of signal frequencies is used for the
signals that move from the cable subscriber .In the downstream direction
(from the network to the computer), network speeds can be up to 27 Mbps.
In the upstream direction (from computer to network), speeds can be up to
10 Mbps. Most modem producers have selected a more optimum speed
between 500 Kbps and 2.5 Mbps.
3. POWER LINE COMMUNICATION
(PLC)
• PLC also called Broadband over Power Lines (BPL) or
Power Line Telecoms (PLT), is a wireline technology
that is able to use the current electricity networks for
data and voice transmission. PLC modems transmit in
medium and high frequency (1.6 to 30 MHz electric
carrier). The asymmetric speed in the modem is
generally from 256 kbit/s to 2.7 Mbit/s.
• ADVANTAGES
• The major advantage of BPL over regular cable or DSL
connections is the availability of the extensive
infrastructure already available which would appear to
allow more people in more locations to have access to
the Internet.
WIRELESS MODEM
1.WI-FI( WIRELESS FIDELITY)
Wi-Fi is an abbreviation for "wireless fidelity” .Wi-Fi was intended to allow mobile
devices, such as laptop computers and personal digital assistants (PDAs) to connect to
local area networks, but is now often used for wireless Internet access.
A Wi-Fi-enabled device is able to connect to a local area network when near one of the
network's access points . If the local area network is connected to the Internet, the WiFi device can have Internet access as well. The access point built into a typical Wi-Fi
home router might have a range of 45 m (150 ft) indoors and 90 m (300 ft) outdoors.
Advantages of Wi-Fi
•
•
•
•
Allows LANs to be deployed without cabling, potentially reducing the costs of network
deployment and expansion. Spaces where cables cannot be run, such as outdoor areas
and historical buildings, can host wireless LANs.
Competition amongst vendors has lowered prices considerably since their inception.
Many Wi-Fi roaming, in which a mobile client station such as a laptop computer can
move from one access point to another as the user moves around a building or area.
Many access points and network interfaces support various degrees of encryption to
protect traffic from interception.
2.WIMAX
WiMAX is an acronym that stands for Worldwide Interoperability for Microwave Access.WiMAX cover
wider, metropolitan or rural areas. It can provide data rates up to 75 megabits per second (Mbps)
per base station with typical cell sizes of 2 to 10 kilometers. This is enough bandwidth to
simultaneously support (through a single base station) more than 60 businesses with T1/E1-type
connectivity and hundreds of homes with DSL-type connectivity.
It is similar to Wi-Fi in concept, but has certain improvements done at improving performance and
should permit usage over much great distances. It will provide fixed, portable, and eventually
mobile wireless broadband connectivity and also provides POTS services.
3.Free Space Optics
FSO is optical, wireless, point-to-point, line-of-sight broadband technology that is an alternative to
fiber optic cable systems without expense of fiber. Speed is comparable to fiber optic
transmissions and transmits up to 1.25 Gbps at distance of 4 miles (6.4 kilometers) in full-duplex
mode.
• Advantages of FSO
Significantly less expensive than fiber optic or leased lines
Much faster installation, days or weeks compared to months for fiber optic cables
Security is key advantage; not easy to intercept or decode
• Disadvantage of FSO
Loss of Signal due to Fog
Interference of signal due to bird/flies obstructing the signal .
Broadband Wireless Modem Installation Procedure
To Configure the PC:1. Right click to My Network Places Icon. Click on Properties.
2. Right click on Local Area Connection Icon. Click on Properties.
3. Select Internet Protocol (TCP/IP) Properties.
4. Select Use the following IP Address radio button.
1.IP Address 192.168.1.5
2.Subnet Mask 255.255.255.0
3.Default Gateway 192.168.1.1
4.Preferred DNS server 192.168.1.1
5.Click OK and close.
5.open command prompt by following procedure
1.click on START button
2.select Accessories
3.click on Command prompt.
4.Type command ping 192.168.1.1
The above result shows that there is good
connectivity between the PC and ADSL Modem
To Configure the Modem in Always on mode :6. Open Internet Explorer and type http://192.168.1.1 in the web browser, the following Window appears:1.Type Username admin and Password admin and click OK.
7.click on Advanced Setup and then select WAN
8.Enter the VPI and VCI as VPI=0 and VCI=35
9.Select PPPoE radio button
10.Encapsulation mode as LLC and click Next.
11.Type username and password as given to the customer for broadband access.
12.click on Enable NAT function box as
12.Click on next
13.click on save.
14.Click on Save/Reboot.
How to configure the Wireless settings in Type II Modem
1. Go to Wireless menu.
2.Click on Basic submenu.
3. Click on Advanced. Check the following settings in Advanced setup of wireless.
How to save and reboot the modem:1.Select Save/Reboot submenu
2.click on Save/Reboot.
3.Go to Management menu.