DSL-Digital subscriber line is offered at 256k each way for
$24.95 per month and at 530 kb $29.95 per month.
Here are some advantages of DSL:
You can leave your Internet connection open and still use the phone line for voice calls.
The speed is much higher than a regular modem.
DSL doesn't necessarily require new wiring; it can use the phone line you already have.
The company that offers DSL will usually provide the modem as part of the installation.
Disadvantages of DSL:
A DSL connection works better when you are closer to the
provider's central office.
The connection is faster for receiving data than it is for
sending data over the Internet.
The service is not available everywhere.
High bit rate DSL
(HDSL) and Symmetric DSL (SDSL) both provide data transmission
rates up to 1.544 Mbps in North America and 2.048 Mbps in
Asymmetric DSL (ADSL) provides different data transmission
rates. For the downstream, data transmission, ADSL supports up
to 6.1 Mbps. For upstream data transmission, ADSL supports up to
640 Kilobits per second (Kbps).
Very high data rate Digital subscriber Line (VDSL) provides the
highest data rate, at 51 to 55 Megabits per second (Mbps) over
cable lengths of up to 1,000 feet or 300 meters.