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DSL Users
Installation of a DSL splitter and an AT&T Z800A filter is required
to use the advanced features of this telephone if you have DSL
(Digital Subscriber Line) service.
Set-Up for DSL Users
If you are a DSL (Digital Subscriber Line) customer, you may experience
interference with the advanced features of this telephone. Certain features
of this phone (e.g., intercom, hold, line privacy, etc.) work by sending a data
signal using Line 1. This data signal is sent at some of the same frequencies
as those used by your DSL service. Microfilters are used to block the high
frequency DSL signals from being transmitted through and interfering with
your telephones. These same microfilters that may have been installed for
your DSL service will also block the data signals between your system
phones. Therefore, some features of this phone may not work properly
when DSL filters are installed in your building. This problem can occur even
if the DSL line is not one of the lines used by the phone system. If you use
the microfilters that your DSL service provider may have supplied when you
activated DSL service with this phone, some of the phone features will not
work. Once the DSL splitter (described below) is installed, you should no
longer experience interference.
Installation, by your DSL service provider or other professional, of a DSL
splitter (not a"microfilter") AND an AT&T Z800A Isolation Filter as close
as possible to the "protection block" or "network interface" (where the
telephone line enters the house) may resolve DSL interference. (It may be
necessary to use a DSL splitter intended for outdoor use.) A DSL splitter
allows the data and voice signals to use the same telephone line without
interfering with each other. An AT&T Z800A filter isolates the splitter from
your phone system and reduces interference with the signals used by the
system phones to communicate with each other.
You can obtain an AT&T Z800A filter at no charge by calling 1 800 222-
3111. You will also receive a diagram showing the proper installation of
the AT&T Z800A filter with a DSL splitter, DSL modem and your system
phones. AT&T cannot supply the DSL splitter.
Please contact your DSL service provider or professional contractor for
details about obtaining and installing a DSL splitter. Your DSL service provider
may require you to bear any installation costs. AT&T and the manufacturer of
this product have no affiliation with your DSL provider and the type or quality
of services they offer. Installation must be performed at your own expense
and AT&T cannot troubleshoot or provide installation support.
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BEFORE YOU BEGIN
BEFORE YOU BEGIN
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