viii User’s Reference GuideAppendix B — Setting Up Telco Services ...................................B-1Obtaining an ISDN line ................................................... B-1Finding an ISDN service provider ........................... B-1Choosing an ISDN line .......................................... B-1Ordering an ISDN line ........................................... B-1Completing the ISDN worksheet...................................... B-5Appendix C — North American Telco Provisioning for ISDN.........C-1Appendix D — Setting Up Internet Services ...............................D-1Finding an Internet service provider................................. D-1Unique requirements ............................................ D-1Pricing and support .............................................. D-2ISP’s Point of presence ........................................ D-2Endorsements ..................................................... D-2Deciding on an ISP account ............................................ D-2Setting up a Netopia R3100 account ..................... D-2Obtaining an IP host address ................................ D-2SmartIP™ ............................................................ D-2Obtaining information from the ISP.................................. D-3Local LAN IP address information to obtain ............ D-3Appendix E — Understanding IP Addressing............................... E-1What is IP?.................................................................... E-1About IP addressing ....................................................... E-1Subnets and subnet masks .................................. E-2Example: Using subnets on a Class C IP internet.... E-3Example: Working with a Class C subnet ................ E-5Distributing IP addresses ............................................... E-5Technical note on subnet masking......................... E-6Configuration ....................................................... E-7Manually distributing IP addresses ........................ E-8Using address serving .......................................... E-8Tips and rules for distributing IP addresses............ E-8
