Enabling Adsl; Splitter & Filters - Alcatel speed touch home Advanced User's Manual

4.2

Enabling ADSL

4.3 Splitter & Filters
3EC 17096 AAAA TCZZA Ed. 01
Prior to using the Speed Touch Home, you MUST contact your
ADSL provider. He will inform you whether the ADSL service is
already enabled. If not, he will advice you on how to proceed.
Your ADSL provider must provide you with:
A telephone line which supports ADSL service;
"
Guidelines for in home cabling;
"
A splitter or filters to decouple conventional phone service and
"
ADSL service.
Next to existing Plain Old Telephone Service (POTS) signals, ADSL
signals are added to the wires in Central Offices. Although POTS
and ADSL occupy distinct channels, they might influence one
another.
In devices such as phones, modems, answering machines and fax
machines (collectively referred to as telephony devices) ADSL
signals can cause audible noise and hence possible audible
disruption may occur. Telephony devices in turn can interfere with
ADSL signals, causing deterioration in data throughput.
To avoid this mutual interference, an electronic central splitter or
distributed filters need to be installed. As the names implies: a
splitter splits or combines signals while filters prevent signals from
entering or escaping from devices.
As a variety of configurations are (being) deployed, ask your ADSL
provider for advice. He will usually prefer one solution rather than
another. This following chapter is intended to highlight only the
most important aspects.
4 ADSL Connectivity
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