AT&T System 85 Telephone User Manual


 
7401D and 7401 Plus Voice Terminals
7401D and 7401 Plus Voice Terminals
The 7401D (7401D01A) and the 7401 Plus (7401D02A, the newest 7401 set) are both single
appearance digital voice terminals which have no call appearance buttons or lights, but have two
virtual
call appearances (refer to the section below titled Special Operational Characteristics).
The user answers a call by going off-hook. The second appearance is primarily used with the
Conference and Transfer features. However, it can be used to originate an outgoing call or
receive a second incoming call. Depending on how the 7401D or the 7401 Plus voice terminal is
administered, the second call appearance may be restricted to incoming priority calls and outgo-
ing calls only.
Note: The 7401D01A is no longer being manufactured. The 7401D02A (7401 Plus) will be
discontinued as of January 2, 1995.
Applications
The 7401D (7401D01A) and the 7401 Plus (7401D02A) voice terminals can be used with the
DEFINITY Communications System G1, G2, G3, System 75, and System 85. These voice termi-
nals are especially suitable for general office workers with low call volumes, manufacturing,
warehousing, guard and/or reception areas, or office desks.
The 7401D and 7401 Plus voice terminals can also provide simultaneous voice and data com-
munications with the 7400B Data Module. PC platform products can also be useful in providing
voice capabilities since these screen-based products can greatly enhance the telephone capabili-
ties of these basic voice terminals.
Special Operational Characteristics
The 7401D (7401D01A) and 7401 Plus (7401D02A) do not have traditional call appearance but-
tons with indicators. To the user, these voice terminals appear to be single call appearance sets.
However, there are two
virtual
call appearances with
virtual
in-use and
virtual
status indicators.
That is, to the PBX, the 7401D and 7401 Plus voice terminals appear to be a two call appearance
set. These call appearances are necessary to provide the Conference, Transfer, and Hold
features.
The Automatic Line Management (ALM) feature of the 7401D or 7401 Plus voice terminal
automatically selects one of the two
virtual
call appearances when the user goes off-hook either
by the user’s lifting the handset (on the 7401D or the 7401 Plus voice terminal) or turning on the
optional speakerphone adjunct (on the 7401 Plus voice terminal). ALM follows a hierarchical
algorithm. From the user’s point of view, the hierarchical order of actions which could take place
is:
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