Q.
What is DSL?A. It is a
service provided by the Telephone Company or an Internet
Service Provider that allows the customer to connect to
the Internet at speeds greater than 56 kbps.
Q. Do I need a
second line for DSL?
A. In most cases, you will only need one telephone
line for DSL. Your DSL connection will allow you to talk
and surf the web at the same time without the need for a
second line. [SDSL most likely will require a second
line, ADSL in most cases will not.]
Q. Do I need
special equipment
to use DSL? (This should be customized for the
way that particular company is deploying DSL.)
A. Yes, there are two different ways that ADSL may be
provisioned – with and without a splitter. In both cases
you will need to have a DSL modem and an Ethernet
Network Interface Card (or USB port) in your computer.
If you have a splitter-less connection, then you will
need filters for every telephone that you have in your
home. If you have a splitter connection, then you will
need to have the telephone company install a splitter in
your home.
Q. Which
connection is better:
splitter or
splitter-less?
A. Each has its own advantages. The splitter is less
flexible if you want to move your computer around, but
then filters are not needed for each telephone. When a
splitter is used, the splitter device is put where the
company’s lines connect to the customer’s inside wire
(protector or NID). Then, new inside wire is run from
the splitter to where the computer is located. If a
splitter-less configuration is used, then all the
customer must do is to place a filter between the wall
jack and each telephone in use. You may need a splitter
for full rate ADSL. This could provide up to 6M bps of
speed vs. Glite DSL that only provides 1.5M bps. This
depends upon the company’s way of provisioning.
Q. Can I
connect
more than one computer to my DSL line?
A. Yes, but you will need extra equipment. The most
common way to add a second computer to your DSL
connection is to purchase a router. The router is placed
between your computers and the DSL modem and acts to
govern the connections for both computers. Both
computers plug into the router using Cat 5 wiring.
Companies will have to determine if they will support
the router – some are and some are not.
Q. Am I
guaranteed that my
speeds will be faster?
A. Internet speed to a web site is determined by
several factors: Loop speed, ISP speed, Internet
backbone speeds and the actual website. With DSL the
telephone company is increasing the loop speed to the
customer. However, the ISP, Internet backbone or website
may not be able to operate at the highest speed allowed
all the time. Therefore, depending upon the number of
users on the Internet, your connection speeds will vary;
however, you will find that your connection speeds will
be significantly faster than dial-up speeds.
Q. What is the
difference between DSL
and Cable modems?
A. DSL is a direct connection from your computer to
the Internet Service Provider. There is no shared
connection. Therefore, it is a completely secure
connection. In order for someone to see your e-mails or
what you are doing on the Internet, they would have to
hack into your Internet Server. This is not the case
with cable modems. They are a shared connection. Because
it is a shared connection, the loop speed is shared
between all your neighbors on the network. If there are
many users at one time the loop speed can be
significantly reduced even before it reaches the ISP,
Internet backbone or website.
Q.
Can all customers
get DSL?
A. DSL service is generally restricted to those
customers who live within approximately 18,000 feet of
the telephone company’s central office switch. Because
of the technological limitations on DSL, any customer
living beyond 18,000 feet may not have access to DSL
service. There are also some instances where loops under
18,000 feet may not be capable of DSL due to
interference from other equipment installed on the
cable.
Q. What do the
upload and download
speeds mean?
A. When you upload, you are sending information to
the Internet. An example is when you type in a web page
address and then hit “enter”. You have uploaded
information. Download is what you receive, such as a web
page full of words and graphics. Because we usually send
much less information to the Internet than we receive,
we don’t need as much upload speed as we do download
speed.
Q. Can I still
keep my current Internet Service Provider?
A. Your Internet provider must contract with either
the telephone company or some other DSL loop provider to
have the capability of offering DSL. Otherwise, you will
have to switch to an Internet Service Provider that does
offer DSL. (CSRs should have a list of ISP’s that do
contract for DSL.)
Q. If I have
to
switch to a new Internet Service Provider to get DSL,
must I cancel my existing dial-up Internet service?
A. Many Internet Service Providers allow you to
connect without dialing into them using their dial-up
connections. You will have to check with them to see.
CSRs should notify the customer that if they retain
their existing ISP they will have to pay for the ISP
associated with DSL as well as the existing ISP. The
existing ISP may charge less if all the customer wants
to retain is e-mail.
Q. Will I have
to change my
e-mail addresses?
A. If you do retain an account with your existing
dial-up ISP and access your e-mail via some other means,
then you will not have to change your email address.
However, if you cancel service with your existing ISP
you will most likely have to change your email address.
Source: Developed for the Texas Telephone Association by
Paul McMurray