Glossary
DS1000/2000 Product Description
Section 5: Glossary
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5
Trunk (Line) Queuing /
Trunk Callback
Permits an extension user to queue (wait in line) off hook for a busy
trunk or trunk group to become free. If the user hangs up, the system
automatically converts the Trunk Queue to a Trunk Callback. When the
trunk becomes free, the system automatically recalls the extension that
left the Callback. The user then just lifts the handset to answer the Trunk
Callback and dials their call.
Reference:
Trunk (Line) Queuing / Trunk Callback on page 93.
Trunk Groups
Enables extension users to dial Trunk Group access codes 90-98 to place
calls on Trunk Groups 0-8.
Reference:
Trunk Groups on page 94.
Trunk Timers
See System Timers on page 125 in this glossary.
U Slot
Universal Slot
A version of the DS2000 system that allows flexible PCB-to-cabinet slot
assignments.
Reference:
DS2000 System Configuration on page 18.
Uniform Call Distribution
(UCD) Hunting
A type of Extension Hunting in which calls route to hunt group members
according to the frequency of use of the member extensions. The first
extension rung is the member that has been idle the longest. The last exten-
sion rung is the member that has been idle the shortest. See also Circular
Hunting on page 114 and Terminal Hunting on page 126 of this glossary.
Reference:
Extension Hunting on page 47.
Universal Night Answer
See Night Service / Night Ring on page 121 in this glossary.
Unscreened Transfer
See Transfer on page 126 in this glossary.
Unsupervised Conference
See Tandem Trunking / Unsupervised Conference on page 125 in this
glossary.
User Programmable
Features
The capability keyset users have to customize the way their telephones
work, without having to rely on system programmers.
Reference:
User Programmable Features on page 95.
