Planning12 Installation ManualSample network configurationIn the sample network, the New York Main Office and the Los Angeles and San Franciscobranch offices are using the KX-TDA0480 to realise low-cost voice and fax communicationsthrough the IP network.This sample is used throughout this manual to illustrate network and unit configurations. Alsosee the IP addressing and numbering plan network diagrams in Appendices A1 and A2.And this network is configured using the KX-TDA0480's internal DNS functions to managenetwork IP address-to-telephone number translations. See Appendix A3 for details regardingthis function.Although the sample network described above illustrates many of the KX-TDA0480'scapabilities, it represents only one of many possible network configurations. The variousfeatures and methods for implementing KX-TDA0480 products are discussed in greater detailin the following sections of this guide.Whatever the configuration envisioned, when planning a network installation, take care toavoid configurations that introduce unnecessary delays in transmission time. This is especiallyimportant in the case of Firewall protection systems or VPN (Virtual Private Network) devices.See Appendix A5 Optimising Performance: for a discussion of methods for optimisingcommunications.Router PBXRouterRouterPSTNPSTNPSTN New York Main OfficeLos Angels Branch OfficeSan Francisco Branch OfficeIP PBXIP PBXIP PBXIP PBXIP NetworkKX-TDA0480 (LA01)KX-TDA0480 (NY01)KX-TDA0480 (NY02)KX-TDA0480 (SF01)Networking or