NoteThe IP addresses of PBXs cannot be obtained fromthe DHCP server. You must manually enter the PBXIP addresses.PBX IP Address 1Enter the IP address of the primary PBX. PressTest to verify the connection to the PBX.PBX IP Address 2If your network uses a secondary PBX, enter the IPaddress of the secondary PBX. Press Test to verifythe connection to the PBX.PBX Change TimeIf your network uses a secondary PBX, enter thelength of the time before the failover process starts.• Default: 60 secondsNote• You can confirm the connection to thesecondary PBX after programming. When theKX-NT400 is starting up, press and hold both(HOLD) and until the message "Nowstarting ..." appears.To reconnect to the primary PBX, restart theKX-NT400. For details, see "Restarting theKX-NT400 (Page 176)".• You can also use the dial keys to enter the IPaddresses. See "Entering Characters(Page 155)".• You can reset the settings to their default valuesby pressing Reset to Default.IP Port SettingsTo properly connect the KX-NT400 to a network, the IPport settings must be configured to match the settingsof the network. Consult your administrator for detailsabout the correct settings.If your network uses a secondary PBX, also fill in thefollowing for IP Port 2:• PTAP Server• PTAP ClientNote• These settings should be configured only by anadministrator or installation personnel. Anaccess code is required to access thesescreens.IP Port Setting screen (1/2)Enter the IP ports of the PTAP server and PTAP clientfor IP Port 1 that the KX-NT400 will use to communicateover the network.PTAP ServerEnter the port number for the PTAP server.• Default: 9300PTAP ClientEnter the port number for the KX-NT400 to use forPTAP communication.• Default: 9301IP Port Setting screen (2/2)If your network uses a secondary PBX, enter the IPports of the PTAP server and PTAP client for IP Port168 Operating InstructionsInstallation and Setup