What is ADSL?
ADSL (Asymmetric Digital
Subscriber Line) is a high-speed Internet access service that utilizes
existing copper telephones lines to send and receive data at speeds that far
exceed conventional dial-up modems. ADSL uses standard telephone lines to
transmit upstream and
downstream data on a digital
frequency, which sets these data streams apart from the analog signals
telephones and fax machines use. Because the ADSL signal is operating on a
different frequency, the telephone can be used normally, even when surfing
the Web with ADSL service.
What are the advantages of ADSL over dialup and other types of connections?
The higher the frequency that is used to send a signal over
a piece of wire, the faster the signal will degrade over distance. Because
ADSL uses very high frequencies, there are limits over the distance that the
signal can be reliably received. The 512Kbps ADSL services have a maximum
range of 6 km. Because of the higher bandwidth required, 2Mbps ADSL services
have a slightly smaller radius of 3.5km.
This means that only customers within this radius of the telephone exchange
can take advantage of ADSL.
Second main parameter
affecting the speed of your connection will be your Internet Service
Provider's bandwidth capacity.
Advantages of ADSL:
- Unlike regular dialup phone service, ADSL provides
continuously-available, "always on" connection. You do not have to problems
of not being able to connect your ISP or failed connection attempts.
Simultaneous Data and Voice
Transmission - ADSL service, can provide both voice and data over the
same telephone at the same time.
Faster Speeds over ISDN and
Dial-Up - ADSL supports data rates of from 128 kbps up to 2 MBps and
even higher rates if desired. Since max connection rate with dial-up
connections is only 56 kbps, it is obvious that ADSL is far superior in this
Faster Speeds, Chipper
Costs - Since ADSL uses your available copper lines, there are no extra
charges or investments to be made to switch to ADSL. This is a great
advantage, compare to the initial investment costs that has to be made for
getting a wireless or leased line internet connection. Moreover, you do
not get extra bill for using your regular copper line for internet
connection. You only pay for your voice data transmission.
How does ADSL work?
broadband service makes use of your existing local telephone line by
splitting the line into two distinct channels - one for voice and the other
for the high speed data connection. The high speed data connection uses a
higher frequency range not used in normal voice communications. The ADSL
signal is carried by two broadband modems - one in your home / office and
the other in the local telephone exchange. ADSL modems use digital coding
techniques to squeeze up to 99% more capacity out of a phone line without
interfering with your regular phone services.
What should you do
to become an ADSL subscriber?
out a Comtech-ADSL subscription form. Here.
Is it possible to use the phone while the line is being used by the ADSL
The most appealing feature of ADSL is the ability to use the
same old phone line to make calls and and surf the Internet simultaneously.
A passive splitter also known as a low-pass/high-pass filter separates the
voice and ADSL signals onto different wire pairs. The customer premise
splitter splits two wires to activate phone jacks and the other two to
activate data jacks. At the local telephone exchange switchborad, voice
calls are handed to the PSTN (public switched telephone network) and the
data signals to your ISPs router.
Is it possible to make two or more computers share an ADSL connection?
Yes, with static connections you can connect more than one
computer to share your ADLS connection using a third party router. For more
information you can call Comtech at +0 392 228 84 44.
factors affect the performance of an ADSL connection? Is the performance of
the ADSL connection same in all regions?
Quality of the phone line at your residence. Better copper
wiring can achieve somewhat faster DSL speeds.
Length of the phone line between the residence and the phone
company hub. ADSL technology is "distance sensitive" because its performance
decreases significantly as you get further away from this hub.
Your ISPs bandwidth capacity.
Spyware on computer(s). Even when the ADSL network may be
functioning at full speed, spyware programs may be consuming the bandwidth,
robbing your DSL speed. Anti-spyware programs should be run regularly on
networks to prevent this problem.
What are the features of ADSL technology in TRNC ?
ADSL being set up in our country is ADSL2+ technology. This
technology differs from other ADSL technology with having faster download
What is a Static IP-address and where is it used ?
Your dail-up, ISDN and ADSL internet connections are done
via dynamic IPs as oppose to static IP. However, if you want to have access
to a web server, FTP server or to a mail server, you need to have a static
IP. A static IP address is a number that is assigned to a computer by an
Internet service provider (ISP) to be its permanent address on the Internet.
Computers use IP addresses to locate and talk to each other on the Internet,
much the same way people use phone numbers to locate and talk to one another
on the telephone.
If you think that your home or office internet connection
will need a static IP please call Comtech at +0 392 228 84 44 for further