Lucent Technologies 555-230-024 manual Issue 5 January 1998

Telephones and Workstations

four-wire digital line circuit card. This is a significant benefit because it provides an easier transition to either a two-line or a four-line environment, therefore reduc- ing wiring expenses and installation adjustments. It also allows you to save space inside the cabinet by using 16-port two-wire boards in place of 8-port four-wire boards.

In response to customers’ requests, the handset has a larger mouthpiece, the telephone has raised buttons that provide improved tactile feel for easier use, and the finish is a scratch-resistant texture that preserves the telephone’s appearance. Programmable speakers and microphones can be turned on or off by the system administrator.

There are six models of 8400 series telephones:

■8403 — A three-line telephone without a display that can be wall mounted. This entry-level telephone is designed for users with basic call handling requirements. It is ideal for areas where there is minimum use, such as reception areas, copy rooms, file rooms, or warehouse locations. It has a built-in one-way (listen-only) speakerphone that facilitates off-hook dialing and listening to voice mail or broadcast messages. You can add a S201A speakerphone and use the inexpensive 8403 in a conference room.

■8405B — A five-line telephone without a display that can be wall mounted. This telephone is for employees with call coverage responsibilities who need multiple line appearances and extensive features. It has a built-in two-way speakerphone and programmable keys so you can access more switch features from the telephone.

■8405D — A five-line telephone with a display, otherwise virtually the same as the 8405B.

■8410B — A ten-line telephone, otherwise virtually the same as the 8405B.

■8410D — A ten-line telephone with a two-line, 24-character display. This telephone has the same features as the 8410B and can also be wall mounted.

■8434DX — A thirty-four-button set with a 2-line by 40-character display. This telephone is for the busy executive or executive assistant where extensive call handling and call coverage flexibility are vital. The 8434DX has a built-in two-way speakerphone and programmable keys. A 24-button expansion module can be added.

Here are the most important features of the 8400 telephones:

Administering Speakerphones. You can administer speakerphones either through the switch or through the telephone. The 8410B, 8410D, and 8434DX telephones can be administered as two-way speakerphones or one-way lis- ten-only speakers, or you can disable the speakers. The 8403 can be adminis- tered as a one-way listen-only speaker or the speaker can be disabled.

Compatibility and Investment Protection. The 8400 series digital telephones are compatible with all two-wire DEFINITY ECS systems and future system

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