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About This Guide
10 4620/4620SW/4621SW IP Telephone Release 2.2 User Guide
What’s New in This Document
Release 2.2 introduces the addition of the 4621SW IP Telephone. The 4621SW has almost the
same appearance, user interface, and functionality as the 4620/4621SW IP Telephones, but
includes a backlit display.
Also with Release 2.2, the 4620SW and 4621SW support Hebrew as part of their language
configuration options.
How to Use This Document
This guide is organized to help you find topics in a logical manner. Read it from start to finish to
get a thorough understanding of how to use your 4620/4620SW/4621SW IP Telephone. Or, use
the Table of Contents or Index to locate information specific to a task or function you want to
perform.