Administrator Phone Guide
6
This guide is intended for audiences in the United States (U.S.) and in Europe, including the
United Kingdom (U.K.). Because of this dual support, dual references are made to industry
features, standards, and telecommunications terminology, as appropriate throughout the
document. For the purposes of this administrator guide, British English terms are assumed to
apply to other English-speaking European cultures, as well.
For example, the U.S. telecom industry refers to an audio communication line between a public
switching system and a private switching system as a “central office” or “CO” trunk. In the U.K.,
this same type of line is called a “local exchange” trunk. In this guide, these terms appear in a
sentence as, “...central office trunk (local exchange trunk)...”.
This guide does not make a distinction between American English and British English spellings
of common words. Only American English spellings appear in this manual. For example, the
word “analog” is not spelled as “analogue.”