About This GuideixAbout This GuideThank you for choosing the SIP-T42G IP phone, an ultra-elegant Gigabit IP phone which isexquisitely designed to provide business telephony features, such as Call Hold, Call Transfer,Busy Lamp Field, Multicast Paging and Conference over an IP network.This guide provides everything you need to quickly use your new phone. First, verify with yoursystem administrator that the IP network is ready for phone configuration. Also be sure to readthe Packaging Contents and Regulatory Notices sections in this guide before you set up and usethe SIP-T42G IP phone.NoteIn This GuideTopics provided in this guide include: Chapter 1 Overview Chapter 2 Getting Started Chapter 3 Customizing Your Phone Chapter 4 Basic Call Features Chapter 5 Advanced Phone FeaturesSummary of ChangesThis section describes the changes to this guide for each release and guide version.Changes for Release 81, Guide Version 81.15The contents in the following section are removed toFrequently Asked Questions on Yealink IPPhones: TroubleshootingThe following sections are new: Power Saving on page 23 BLF Ring Type on page 35Network Directory and Network Call Log features are hidden for IP phones in the neutralfirmware, which are designed for the BroadWorks environment. Please contact your systemadministrator for more information.