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Intercom operation
Intercom operation
This 974 telephone is fully compatible with any AT&T Four-Line Small
Business System Speakerphone 945 or 984 units you may have installed. You
can use a total of 16 945/974/984 units together as extensions in your phone
system.
This 974 telephone is also compatible with any AT&T 964/955/944 phones
you have previously installed. This 974 telephone is NOT compatible with
any 843, 853, 854, 874, or 954 telephones you may have previously installed.
NOTE: If you have one or more 964, 955, or 944 phone(s) installed in
the same phone system with this 974 telephone, you can only have 12
extensions in the phone system.
Each individual phone in your telephone system MUST be assigned
a unique extension number for the intercom feature to work. See
Assign an extension number to your phone on page 24 for instructions.
NOTE: If you subscribe to DSL service, please read DSL users
beginning on page 4 for information about minimizing problems with
this phone caused by DSL signals.
This intercom features both a single-phone page and a system-wide page.
A single-phone page alerts only one phone. A system-wide page alerts all
system phones. Any phone with the Do not disturb (DND) feature activated
will not receive a page.
An intercom call rings at the extension called with a repeating double-ring
pattern.
A single-phone page automatically activates the speakerphone on the
receiving phone. You can deactivate the speakerphone by lifting the handset.
NOTE: If a line is in use, pressing I will place the line on hold and
activate the intercom.
Intercom operation
974CIB_06 4/7/06 3:33 PM Page 67