User Guide for the SIP-T23P/T23G IP Phone8Options Phone User Interface Web User Interface--SIP Server 1/2 √--Server Option x--Registrar Port x--Outbound Status √--Outbound Proxy √--NAT Traversal x--STUN Status √--STUN Server √NoteThe following table shows documentations available for the SIP-T23P/T23G IP phone.Name Contents Where found LanguageQuick Start Guide Basic call features andphone customizationsIn thepackage EnglishUser GuidePhone/Web userinterface settingsBasic call features andadvanced phonefeaturesOn thewebsite EnglishNoteThe table above lists most of the feature options. Please refer to the relevant sections formore information.You can also download the latest documentations online:http://www.yealink.com/SupportDownloadfiles_detail.aspx?CateId=1243&flag=142.