This document provides information on various broadband technologies including leased lines, CDMA, VPN, WiFi, and WiMax. It discusses leased line setup and features, how CDMA and mobile wireless technologies have evolved, how VPNs work and their advantages, what WiFi and WiMax are, and services offered over WiMax networks like VoIP and broadband internet. Implementation details are given for setting up connections using EVDO or CDMA technology. The document seeks to educate trainees on these various broadband options.

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Enterprise Broadband
(Leased line on EVDO, CDMA-
VPN, Wi-Fi, Wi-Max, )

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AGENDA
• Leased line on EVDO
• CDMA-VPN
• Wi-Fi
• Wi-Max

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Broadband
• ‘Broadband’ indicates a means of connectivity at a high
or ‘broad’ bandwidth.

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Broadband Services proposed
• High Speed Internet Access
• Video Streaming
• Video-on-Demand
• Video Conferencing
• Interactive Gaming
• Point-to-Point Data Network on IP

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Leased circuits
• Leased circuits are provided to subscribers for internal
communication between their offices/factories at various
sites within a city/town or different cities/town on point
to point basis, or on a network basis interconnecting the
various sites.

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Purpose of leased lines
• To transmit data between computer and electronic
information devices, BSNL provides data communication
services to its subscribers.
• It offers a choice of high, medium and low speed leased
data circuits as well as dial-up lines.

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Features of Leased Lines
• Full dedicated bandwidth available for exclusive use of
the subscriber
• Complete privacy/ secrecy of data
• From low to high, full range of bandwidth available – 64
Kbps, n x 64 Kbps, 2, 4, 8, 34, 45, 140, 155 (STM-1)
Mbps, STM-4/16, etc

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Leased line network setup

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Mobile Wireless Technology Evolution and Convergence
CDMA 2000
1x EV-DO
EV-DO Rev A EV-DO Rev B, C
3G Technology Evolution
802.16e
OFDMA
802.16e
MIMO-OFDMA
Broadband Wireless Technology Evolution
Wi-Fi
OFDM

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VPN
Virtual Private Network is a type of private
network that uses public telecommunication,
such as the Internet, instead of leased lines
to communicate

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Virtual Private Networks (VPN)
Basic Architecture

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Pop Quiz!
VPN stands for…
a) Virtual Public Network b) Virtual Private Network
c) Virtual Protocol Network
d) Virtual Perimeter
Network
Q.1

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Pop Quiz!
A.1
b) Virtual Private Network
VPN stands for…
VPN stands for "Virtual Private Network" or "Virtual
Private Networking." A VPN is a private network in
the sense that it carries controlled information,
protected by various security mechanisms, between
known parties. VPNs are only "virtually" private,
however, because this data actually travels over
shared public networks instead of fully dedicated
private connections.

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Advantage of VPN
• VPN masks customer’s IP address to one of the VPN’s
IP addresses and hides Customer’s IP address.
• VPN, are usually used for safety, privacy and
unrestricted access to internet services and websites.
• Virtual Private Networks reduce network costs because
they avoid a need for many leased lines that individually
connect to the Internet.

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3G
• 3G is the next generation of mobile communications
systems.
• It enhances the services such as multimedia, high speed
mobile broadband, internet access with the ability to
view video footage on mobile handset

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Mechanism behind VPN
• Let’s have an IP address in China 117.456.34.56. During
the access of YouTube, this IP address is recognized
as that being of China and access is denied.
• VPN service lets you have an IP address of another
country, lets say France. Now when you access the site
from China, it will think you are in France and you will be
allowed access
• In China, using a virtual private network is the only way
to go through government’s firewalls.

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Future of VPN: Companies with VPN

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“Extra-net” service
• A VPN can be provided access from another VPN if this
additional service is required by the subscribing VPNs.
This service is called “extra-net” service

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Various Technologies
Wi Fi/ WiMax

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What is Wi fi ?
• Cables are required to connect more number of
computers.
• Locating the individual cable of computer is difficult.
• To avoid this kind of problem only one solution .i.e. Wi
fi.
• Wi fi gives freedom to connect PC to Internet from any
room.

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Meaning of Wi fi.
• Wi fi means wireless fidelity, i.e. freedom which allows a
person to connect to Internet, from any room without
wires.

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Features of Wi fi.
• Wi fi enabled computers send and receive data indoor
and outdoor within the range of base station.
• Wi fi allows to access Internet while on move.
• Wi fi is a set of product compatibility standards for
wireless LANs.

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Components required for Wi fi.
• PC or Laptop running windows 98 or above versions.
• Wireless PCMCIA card.
• Access Point, essentially a compact radio transmitter
with antenna.

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Components required for large
environment.
• Multiple access points.
• Network switch.
• Authentication and Billing server.
• Wireless access gateway.

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Comparison of wireless standards.
802.11b 802.11g 802.11a
Frequency 2.4 to 2.4835Ghz 2.4 to 2.4835Ghz 5.725 to 5.850Ghz
Speed (max) 11Mbps 54Mbps 54Mbps
Application Home N/Ws Larger N/Ws ,
Small Business
Larger N/Ws ,
Large Business
with security

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Limitations of Wi fi.
• Hot spots are very small.
• Because this spectrum is unlicenced, chance of
interference is more.
• Do not support non-line of sight.
• Wi fi range is about 30Mts.
• Transmit power is between 15mws and 200mws.

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CDMA

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WiMax
• It is an IP based Wireless Broadband Access Technology
utilizing IEEE 802.16e-2005 standard as the air interface.
• WiMAX acronym meaning “Worldwide Interoperability
for Microwave Access”

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WiMaX Services
VoIP in following manner:-
a.) PC to PC (In India and Outside).
b.) PC to Phone (Outside India).

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WiMax Broadband
• Connecting to WiMAX :
BSNL offers large variety of Customer Premises
Equipments ( CPE) including Outdoor, Indoor and USB
dongles from which customers can choose as per their
application requirements.
Indoor : Best suited for Home/Office users. Can be
used in moving vehicle also
Dongle: Small Dongle can be connected directly to PC /
Laptop via USB port.
Outdoor:Suitable for remote and rural areas. Can be
used upto 15 Km distance (Line of sight) from BTS site.

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WiMax Services
• High speed broadband connectivity upto 7Mbps
• Leased Lines
• VPN Services
• Web based Video Conferencing

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Charges of CPE

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Initial charges at the time of application

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Volume based prepaid recharge
vouchers

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Topup Vouchers

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Grace period

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CDMA
BSNL brings to its esteemed
customers wireless data Service with CDMA 2000 1X &
EVDO technology.
A customer can avail these services by using USB or
PCMCIA type data card.
The data card (EVDO/CDMA 1X) allows to accesses the
high speed internet without need of landline

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Types of data services on CDMA technology
• CDMA 1X data service with internet surfing peak speed up
to 144 kbps.
• EVDO data service with internet surfing peak speed up to
3.1 Mbps .

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Sale price of USB type HSDPA Data Cards

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3G HSPA Fixed Wireless Phone with
Video Calling Facility
• Bharat Sanchar Nigam Ltd (BSNL) all set to launch Next
generation 3G Fixed Wireless-Land-line Phone with Video
Calling and 3G HSPA Internet access facility.
• Initially BSNL’s 3G FWP will be launched in Metro cities
and it will cost around Rs. 5500. The device can be used
as a 3G Internet modem whereas subscriber can connect
to the PC through A-A USB Cable to access high speed
wireless 3G broadband with speed up to 3.6 Mbps. I

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How to connect to EVDO?
• Insert the EVDO R-UIM into any EVDO device. Connect
the device to the computer. Follow the instructions for
installing the device as a modem in the computer. Use
either the dialing software provided with the device or
create a dialup connection with the device as a modem.
Use the username, password and dialing number to
connect to the internet.
Username: EVDO Phone Number (97XXXXXXXX)
Password: EVDO Phone Number (97XXXXXXXX)
Dialing Number: #777

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THE END