AT&T System 85 manual 7401D and 7401 Plus Voice Terminals, Special Operational Characteristics

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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