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Glossary
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Protegé
®
User Guide - single line telephone
Virtual Number
An extension number that is not
physically connected to a specific
keyset. This number might be pro-
grammed under a feature key of one
or several extension keysets. This
Protegé feature has many possible
applications. If your company’s
phone system uses virtual numbers,
consult your system administrator
for an explanation of how they work
in your location.
Tenant Group
Tenant Groups are a way of grouping
groups of extensions in a Protegé
phone system. For example, if sever-
al companies in a building share a
common phone system, each compa-
ny’s extensions would form a Tenant
Group. See also class of service.
Tone
The audible sound your phone
makes. There are many different
tones: for example, dial tone, ring
tone, busy tone, and error tone.
Trunk
A telephone line owned by the local
telephone company that connects
your office telephone system to the
outside world. Also known as an
“outside” line, or “c.o.line.”
UCD
Uniform Call Distribution. A Protegé
feature that accepts incoming calls
and routes them to a series or bank
of agents. See also Hunt Group.