AppendicesInstallation Manual 139Units at each location have unique IP addresses. These addresses fall within the same subnetas that of the gateway shared by the units. This means that the KX-TDA0480 connected to thesame gateway will share the network portion of their IP address with the Gateway.Units at eachlocation have unique IP addresses. These addresses fall within the same subnet as that of thegateway shared by the units. This means that all KX-TDA0480 connected to the same gatewaywill share the network portion of their IP address with the Gateway.In the sample network, the San Francisco and Los Angeles offices are using a Class C addressspace (255.255.255.0), which means that all but the final octet (0) must be the same for alldevices. The final octet for the device address cannot use the values 0 or 255.Unit IP AddressingIn the sample network, the IP addresses have been allocated so that each KX-TDA0480 has asequential number. For example, at the New York office, are addressed in sequence so that thelast element of the NY01 address is .91, NY02 is .92. This sequencing is for convenience onlyand is not a requirement of the addressing scheme.Finally, each location in the sample network has only a single router. Of course, there may bemore than one router at each location, and each must be servicing its own subnet.IP Addressing for the sample networkNew York Main OfficeThe New York office has one router and IP PBX + KX-TDA0480 2 units.The IP addressing scheme for the New York office includes:Gateway (router) IP: 133.149.1.1NY01 IP: 133.149.1.91NY02 IP: 133.149.1.92San Francisco OfficeThe San Francisco office has IP PBX + KX-TDA0480 1 and a router.The IP addressing scheme for the San Francisco office includes:Gateway (router) IP: 206.184.223.1SF01 IP: 206.184.223.95Los Angeles OfficeThe Los Angeles office has IP PBX + KX-TDA0480 1. As with the other locations, there isalso a single router.The IP addressing scheme for the Los Angeles office includes:Gateway (router) IP: 206.45.11.1LA01 IP: 206.45.11.34