2
Planning your system
Continued from previous page
• If your establishment has single-line phone jacks (page 11), you must purchase
two-line adapters (model 16598, part number 89-0071-00).
If you have two or three phone lines, you will need one two-line adapter for
each phone. If you have four phone lines, you will need two two-line adapters
for each phone.
If you have one-line phone jacks, and four phone lines, you will also need to
purchase one short telephone line (model 51920, part number 89-0052-00)
or equivalent for each phone. If some phones are being wall mounted, you
may need more short telephone line cords. To order them, visit our website at
www.telephones.att.com, or call 1 (800) 222-3111. In Canada, dial
1 (866) 288-4268.
•
If you have DSL (digital subscriber line) service and if you have more
than three telephones, you probably need to have a DSL splitter installed
at your location by your DSL provider. Please see page 9 of this guide.
• Assign a different system extension number EXT XX to each system telephone
(see the EXTENSION NUMBER section on page 32). We recommend assigning
EXT 11 to an auto-attendant telephone. Every individual phone in your
telephone system MUST be assigned a unique extension number for the
intercom feature to work. If you try to assign the same extension number
to a second phone, you will hear a repeating short ring and the screen
displays ASSIGN NEW EXT #. See the EXTENSION NUMBER section on
page 32 for directions.
• If you subscribe to Centrex service provided by your local telephone
company, assign that 1080 telephone as a console (see the Centrex section
on page 74 for directions).
• Your telephone probably shares its telephone lines with other extensions.
Each telephone line button has LEDs (lights) to show the line status (in
use, on hold, or ringing). To have an accurate line status indication, all units
MUST have their Line 1 jacks connected to the same telephone line (i.e. L1),
Line 2 jacks connected to the same telephone line (L2), and Line 3 jacks
connected accordingly to (L3).
• System telephones have their own private telephone numbers, or several
extensions can share the same number, and be part of a line group.
• Only Line 4 can be a private line. Select
PRIVATE LINE in the LINE GROUP
menu on that telephone (see the LINE GROUP section on page 43).
Continued on next page
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