In the beginning there was the dialup. And lo! the consumer
looked on it, and it was not good enough. Then the gods
of technology sent down many different ways to link the
has many disadvantages, especially in India, where local
calls are expensive. About 20 years ago, local telephone
calls were billed per call, and not on the time taken
per call. Today, however, telephone costs send the cost
of dialup access through the roof.
from that, dialup connections through modems and telephone
lines are very slow, which means you cannot enjoy the
full range of media available on the Net. Cable has several
advantages over a dialup connection. In India, cable is
cheaper than dialup for heavy users. However, cable is
shared bandwidth between users; a lot of your speed depends
on how many users are on your node.
digital subscriber line (DSL) telephone service is more
reliable and not dependant on the number of users on the
node, but it is typically more expensive than cable, thus
more suited to corporate customers.
fibre-optic connection is the best and fastest possible
connection that anything can give you. But it is expensive,
complicated and difficult to maintain.
you browse, so shall you choose: As a customer, the
connection you choose depends on what your Internet use
use, browse, email and chat: Dial-up modems are the
best solution, as they are the cheapest deal in the market.
use, fast download and video chatting for home use only:
Cable modems are suitable for such applications and cheaper
compared to DSL.
download and running business servers: DSL is preferable
as they are of higher capability than that of cable modems.
business and/or Internet service provider: Fibre-optic
modems are the most suitable as huge volumes of data are
history of increasing bandwidth
300 bps - 1960s through 1983 or so (Only text)
1200 bps - Gained popularity in 1984 and 1985
9600 bps - First appeared in late 1990 and early 1991
19.2 kilobits per second (Kbps)
56 Kbps - Became the standard in 1998
ADSL - Theoretical maximum of up to 8 megabits per second
(Mbps). Gained popularity in 1999.
Internet connection supermarket
Dialup: Connection through a conventional modem
to any Internet service provider (ISP) through telephone
lines. They can communicate at the maximum speed of 56
A cable modem enables you to hook up your PC to a
local cable TV line and receive data at about 1.5 Mbps.
This data rate far exceeds that of the prevalent 28.8
and 56 Kbps telephone modems and the 128 Kbps of integrated
services digital network (ISDN), and is about equal to
the data rate available to subscribers of digital subscriber
line (DSL) telephone service.
the cable modem attaches to a standard Ethernet card in
the computer. All of the cable modems attached to a cable
TV company coaxial cable line communicate with the local
cable TV company office. The actual bandwidth for Internet
service over a cable TV line is up to 27 Mbps on the download
path to the subscriber with about 2.5 Mbps of bandwidth
for interactive responses in the other direction.
addition to the faster data rate, an advantage of cable
over telephone Internet access is that it is a continuous
connection. The big clincher is where you live. Since
cable is shared bandwidth between users, a lot of your
speed results depend on how many users you share the link
An increasingly popular method of accessing the Net in
thickly populated areas of Indian metros. A cable
provider takes a leased line, wireless or other high-speed
connection to the Net and redistributes it to several
homes in the area. This connection is typically slower
than true cable Internet, but its cheaper, and provides
always-on access. Customers who browse for
more than two-three hours a day find this a cheaper method
of access than dialup.
A digital subscriber line (DSL) connection squeezes
more information through a standard telephone line, and
lets you make regular telephone calls at the same time.
There are several variations on DSL technology.
DSL (ADSL): The download speed is greater than the upload
speed. It works because most Internet users look at, or
download, much more information than they send, or upload.
bit-rate DSL (HDSL) - Providing transfer rates comparable
to a T1 line (about 1.5 Mbps), HDSL receives and sends
data at the same speed, but it requires two lines that
are separate from your normal phone line.
DSL (ISDL) - Geared primarily toward existing users of
ISDN, this is slower than most other forms of DSL, operating
at fixed rate of 144 Kbps in both directions. The advantage
is that customers can use their existing equipment.
Symmetric DSL (MSDSL) - This is Symmetric DSL that is
capable of more than one transfer rate. The transfer rate
is set by the service provider, typically based on the
service (price) level.
Adaptive DSL (RADSL) - This is a popular variation of
ADSL that allows the modem to adjust the speed of the
connection depending on the length and quality of the
DSL (SDSL) - Like HDSL, this version receives and sends
data at the same speed. While SDSL also requires a separate
line from your phone, it uses only a single line instead
of the two used by HDSL.
high bit-rate DSL (VDSL) Extremely fast, thus able
to even support digital television and video-on-demand.
VDSL is asymmetric, but only works over a short distance
using standard copper phone wiring.
DSL (VoDSL) - A type of IP telephony, VoDSL allows multiple
phone lines to be combined into a single phone line that
also includes data-transmission capabilities.
Internet: A wireless local area network that uses
radio frequency technology to transmit and receive data
over the air, minimizing the need for wired connections.
Thus, wireless LANs combine data connectivity with user
mobility. However, a wireless connection usually requires
a clear line-of-sight between the local transmitting satellite
and the receiving dish antenna.
Short for "wireless fidelity, it''s a term
used to describe wireless networking technology. Wi-Fi
is a wireless network that uses a broadband connection,
an access point and a Wi-Fi card inside of a computer
to allow users to surf the Internet within a specific
wireless access point remains hooked up to your wired
network (broadband connection). If you have the right
PC card, your laptop, PC, or personal digital assistant
(PDA) can get the signal. Certain cafes, airports, and
universities let you tap into their wireless network so
you can get Internet access on your Wi-Fi-equipped laptop.
Internet: This is not a Mile High Internet browsing
club, but a means of providing an Internet connection
from the air by placing aircraft over hundreds of cities.
The US-based Angel Technologies is planning an airborne
Internet network, called High Altitude Long Operation
(HALO), which would use lightweight planes to circle overhead
and provide data delivery faster than a T1 line for businesses.
Consumers would get a connection comparable to DSL. Another
company, Sky Station International, is planning a similar
venture using blimps instead of planes.