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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 URL
setting from the DHCP options if SIP PnP fails.
2.2.1.3 DHCPv6 Sub-option
The device sends a DHCPv6 request message with vender-specific information (17) added to the option
request. The DHCPv6 server on the LAN responds with a DHCPv6 reply message that contains the requested
value for the specified configuration parameter.
SIP Phone
Download the
configuration file
DHCP
Server
Provisioning
Server
DHCPv6 Request
DHCPv6 Reply
Provisioning URL:
http://[xxxx:xxxx:xxxx:xxxx]/{MODEL}.cfg
Vendor specific
information option
HTTP GET
http://[xxxx:xxxx:xxxx:xxxx]/{MODEL}.cfg
Note
• If the DHCPv6 option is unavailable, the device gives up on DHCPv6.
2.2.1.4 Redirection Server
If 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 from
Panasonic'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 be
registered to the redirection server.
For more information about redirection server, consult your phone system dealer.
Document Version 2014-05 Administrator Guide 39
2.2.1 Automatic Discovery of the Provisioning URL