8 PrefaceNN47923-301Related publicationsFor more information about using the Nortel Business Secure Router 252, refer tothe following publication:• Nortel Business Secure Router 252 - Basics (NN47923-500)Hard-copy technical manualsYou can print selected technical manuals and release notes free, directly from theInternet. Go to www.nortel.com/documentation. Find the product for which youneed documentation. Then locate the specific category and model or version foryour hardware or software product. Use *Adobe Reader* to open the manuals andrelease notes, search for the sections you need, and print them on most standardprinters. Go to the Adobe Systems web site at www.adobe.com to download a freecopy of Adobe Reader.ENET EthernetIP Internet ProtocolISP Internet Service ProviderLAN local area networkLLC logical link controlPPPoA Point-to-Point Protocol over ADSLPPPoE Point-to-Point Protocol over EthernetRFC request for commentSUA single user accountTCP/IP Transmission Control Protocol/Internet ProtocolVC virtual channelVCI virtual channel identifierVPI virtual path identifierWAN wide area network