GENERALLY, WITH FOUR TYPES INCLUDED IN THE DSL FAMILY : (WE COULD CALL IT ALL "XDSL" )
ADSL - ADSL DELIVERS SUPER-FAST RATE OF 32Kbps TO 8.192 Mbps DOWNSTREAM TO THE CUSTOMER AND 32Kbps TO 1.088Mbps UPSTREAM TO THE NETWORK WHILE SIMULTANEOUSLY PROVIDING PHONE SERVICE ON THE SAME STANDARD PHONE LINE. WITH ADSL, INTERACTIVE MULTIMEDIA SERVICES CAN BE PROVIDED TO ALMOST ANYONE WITH A TELEPHONE LINE IN THEIR HOME OR BUSINESS ..
HDSL - THE HIGH COST AND LENGTHY IMPLEMENTATION TIME OF TRADITIONAL T1/E1 AND FIBER LINES HAVE BUSINESSES AROUND THE WORLD SCRAMBLING FOR MORE BANDWIDTH TO ACCOMMODATE APPLICATIONS SUCH AS LAN INTERNETWORKING , VEDIO CONFERENCING AND PBX INTERCONNECT.
AS A RESULT, MORE AND MORE SERVICE PROVIDERS ARE DISCOVERING HIGH-BIT-RATE TRANSPORT A FULL DUPLEX T1 (1.544Mbps) OR E1 (2.048Mbps) ACROSS EXISTING TWISTED PAIR COPPER W/O REPERYERS. THIS HIGH-PERFORMANCE TECHNOLOGY IS THE QUICKEST AND MOST COST-EFFECTIVE OPTION TO T1/E1 LINES ..AND PROVIDES A QUALITY TRANSMISSION THAT IS COMPARABLE TO FIBER…
SDSL - THIS SDSL TECHNOLOGY PROVIDES SYMMETRIC (BI-DIRECTIONAL)HIGH SPEED, VARIABLE RATE COMMUNICATIONS. SDSL ADDRESSES THOSE APPLICATION THAT REQUIRE A SYMMETRIC DATA RATE . SDSL DATA RATE RANGE FROM 160Kbps TO 2.084Mbps..
VDSL - VDSL TECHNOLOGY BOOSTS THE DATA RATES OF THE SUBSCRIBER LINE SIGNIFICANTLY. THE CLOSER THE CUSTOMER IS TO THE CRETRAL EXCHANGE OFFICE, THE HIGHER THE DATA RATE. A SUBSCRUBER AT A DISTANCE OF 5000FT AWAY FROM THE CENTRAL EXCHANGE OFFICE CAN GET A DATA RATE OF 13Mbps AT 3000FT THAT SUBSCRIBER MAY ATTAIN DATA RATES UP TO 1026Mbps AND AT 1000FT, A 51 Mbps DATE RATE IS POSSIBLE…
Remarks
ADSL - > Asymmetric Digitial Subscriber Line
HDSL - > High-bit-rate Digital Subscriber Line
SDSL - > Symmetric Digital Subscriber Line
VDSL - > Very high-bit-rate Digital Subscriber Line
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