Introduction Page 10
How ADSL Works
ADSL uses regular household telephone lines to receive and transmit data. To accomplish this
task, ADSL data is transmitted on frequencies outside of the nor mal voice call range. This way
the signals from the two devices do not interfere with each other.
ADSL provides two major benefits:
•Phone lines alwaysfree: Although t he Diva24 40 uses the same wiring as your regular
telephone, you can still pick up the phone and make a call at any time.
•Instant access: Unlike traditional dial-up modems, a connection made using th e Diva 2440
is always on. You no longer have to wait while your modem dials into your Internet provider.

Splitters and ‘Splitterless’ Operation

A splitter is a device installed at the entry point of the tele phone line to your house and is used
to eliminate interference between the ADSL and voice signals. However, splitters must be
installed by a technician from your telephone company and usually require new telepho ne
wiring to be installed.
The Diva 2440 can operate with or without a splitter with both Full-rate and G.Lite ADSL.

Microfilters

For most splitterless installations, you most likely will need to install a microfilter between your
telephone devices (telephone, fax machine, answering machine) and the telephone jacks.
Microfilters filter out the frequencies outside of the normal voice call range and reduce
interference between ADSL transmissions and voice transmissions.
See About Microfilters on page 33 for more information. Microfilters may or may not be
included in your package. Contact your ADSL provider for more details.