Introduction 1-3Use the guide’s table of contents and index to locate sections onother topics.The appendices of this guide offer helpful information, such as trou-bleshooting tips and a technical support guide.Netopia modelsThisReference Guide covers all of the Netopia ISDN Router models.However some information in this guide will only apply to a specificmodel.For certain models only Throughout thisReference Guide, you will see alerts to the left ofinformation that applies to only certain Netopia models.The models are divided into two groups, Small Office and Corporate.Small Office models include the PN430 S/T, 435, 630, and 635.Corporate models include the PN440, 450, 455, and 640.The models are also divided into North American and Non-NorthAmerican.Among the Small Office and Corporate models, the 400 series modelsoffer AppleTalk service.The AppleTalk models are PC and Mac compatible. However the 600series models are for PCs only.The Netopia ISDN Router’s model number is on the label on the unit’sbottom side.See the Netopia ISDN Router’s Release Notes for more information,or call Farallon Customer Service.Screen differencesBecause different Netopia ISDN Router models offer differentfeatures, the options shown on some screens in thisReference Guidemay not appear on your own particular Netopia ISDN Router’s consolescreen.