Specifications

General Information
2-12 Issue 11 December 1999
■ Warning Tone (Bridging)—(a low-pitched tone heard by all parties in a
Busy Verification attempt that bridges on to an active call) initially applied in
a 2-second (System 75 and G1) or 4-second (System 85 and G2) burst,
then in half-second bursts every 15 seconds.
Desk/Wall Mounting Arrangements
All the voice terminals covered in this manual, except the Model 2554, are
intended for free-standing desktop use. However, wall-mounting is feasible for
many terminals and appropriate kits are available. The detailed description of
each voice terminal contains wall-mounting information and limitations.
Adjuncts
Adjuncts are optional devices that extend the existing capabilities of voice
terminals or provide new services. Some adjuncts are physically attached to their
voice terminals, and others are free-standing, connected by way of mounting
cords. The adjuncts have styling and colors that are compatible with the
associated voice terminals.
Table 2-2 provides a cross-reference between adjuncts and the voice terminals
with which they are used. The following limitations apply to the use of multiple
adjuncts:
■ A speakerphone and a headset adapter cannot be connected to the same
voice terminal simultaneously because they plug into the same jack on the
terminal.
■ A C401A Call Coverage Module and a D401A Digital Display Module
cannot be mounted on the same 7405D or 7434D Voice Terminal
simultaneously because they attach to the same part of the terminal.
None of the adjuncts have facilities for wall mounting, and wall-mounting kits are
not available. However, the modules (call coverage, function key, and digital
display) are attached to their voice terminals, which can then be mounted on a
wall. Free-standing adjuncts (speakerphones and headset adapters) associated
with wall-mounted terminals can be placed on a nearby shelf or table.