1. Presentation On ADSL Asymmetric Digital Subscriber Line
2. Introduction ADSL is a form of DSL, a data communications
technology that enables faster data transmission over copper
telephone lines ADSL is capable of providing up to 50 Mbps, and
supports voice, video and data. ADSL is the #1 Broadband Choice in
the World with over 60% market share ADSL is now available in every
region of the world
3. What Is DSL? DSL (Digital Subscriber Line) is a technology
for bringing high-bandwidth information to homes and small
businesses over ordinary copper telephone lines. DSL refers to
different variations of DSL, such as ADSL, HDSL, and RADSL. ADSL is
one of the type of DSL Technology.
4. What Does ADSL mean? Asymmetric - The data can flow faster
in one direction than the other. Data transmission has faster
downstream to the subscriber than upstream. Digital - No type of
communication is transferred in an analog method. All data is
purely digital, and only at the end, modulated to be carried over
the line. Subscriber Line - The data is carried over a single
twisted pair copper loop to the subscriber premises .
5. ADSL Standards:
6. ADSL Speed Factors: The distance from the local exchange The
type and thickness of wires used The number and type of joins in
the wire The proximity of the wire to other wires carrying ADSL,
ISDN and other non-voice signals The proximity of the wires to
radio transmitters.
7. Architecture:
8. Wireless ADSL Without any cable it provides broadband data
transfer. This service using at hotspots such as airports, hotels,
shopping centers, universities, conference halls etc. If you have
WLAN technology in your laptop, phone or etc. You can use this
service. If you don not have this technology in your pc you can
take a card that has the wifi (wireless fidelity ) capability and
fix it to your pc than you can use this service. Uses access point
which is a wireless access device to spread the ADSL
connections.
9. Wireless ADSL Router
10. Advantages of ADSL Faster downloads compared to dial-up or
ISDN. No need for a second phone line - by allowing voice and data
transfer at the same time (you can use the phone as normal while
connected to the internet). Because ADSL transfers data digitally
it doesn't need to convert the data from digital to analogue and
back again. ADSL connections are Always on, which makes the usual
long wait to connect a thing of the past.
11. Limitations of ADSL ADSL connections are not available to
everyone, you need to be within 3 miles of an ADSL enabled
exchange. The hardware costs can be quite significant as you will
need a special ADSL modem and ADSL filters to use the service, most
ISPs allow you to hire these items which can reduce the initial
cost. Because ADSL connections are Always on you will need a
firewall to protect your PC. The limit for ADSL service is 18,000
feet (5,460 meters) At the extremes of the distance limits, ADSL
customers may see speeds far below the promised maximums.
12. Some Other Types Of DSL Symmetric DSL (SDSL) High-bit-rate
DSL (HDSL) Very high bit-rate DSL (VDSL)
13. Conclusion From the presentation we came to know the ADSL,
its working mechanism , architecture, advantages and advantages.
THANK YOU..!!
