Conditions• By default, all DHCP options are enabled, thus the device must use option 160 first. If it is not populated,the device will use 159. If it is not populated, the device will use option 66 as a last resort.• When DHCP options are unavailable, the device gives up on DHCP options.• If DHCP option 160/159/66 is enabled, each time the device starts up it checks for the provisioning URLsetting from the DHCP options if SIP PnP fails.2.2.1.3 DHCPv6 Sub-optionThe device sends a DHCPv6 request message with vender-specific information (17) added to the optionrequest. The DHCPv6 server on the LAN responds with a DHCPv6 reply message that contains the requestedvalue for the specified configuration parameter.SIP PhoneDownload theconfiguration fileDHCPServerProvisioningServerDHCPv6 RequestDHCPv6 ReplyProvisioning URL:http://[xxxx:xxxx:xxxx:xxxx]/{MODEL}.cfg Vendor specificinformation optionHTTP GEThttp://[xxxx:xxxx:xxxx:xxxx]/{MODEL}.cfgNote• If the DHCPv6 option is unavailable, the device gives up on DHCPv6.2.2.1.4 Redirection ServerIf the provisioning URL cannot be obtained via SIP PnP or DHCP, it can be obtained via a redirection server.Redirection server is a service provided by Panasonic that allows retrieval of the provisioning URL fromPanasonic's redirection servers in order to start provisioning.In order to use a redirection server, the MAC address of the unit and the provisioning URL to be used must beregistered to the redirection server.For more information about redirection server, consult your phone system dealer.Document Version 2014-05 Administrator Guide 392.2.1 Automatic Discovery of the Provisioning URL
