Parameter Data Precedence

If a given parameter is administered in multiple places, the last server to provide the parameter has precedence. The precedence, from lowest to highest, is:

• LLDP
• manual administration, with the two exceptions described for the system parameter STATIC.
• DHCP,
• TFTP/HTTP,
• the call server (meaning the Avaya Media Server for H.323, and the Registration Server for SIP), and finally,
• FTP backup files (if administered and if permitted).

Settings the IP telephone receives from backup files or the media server overwrite any previous settings including manual settings. The only exception to this sequence is in the case of VLAN IDs. In the case of VLAN IDs, LLDP settings of VLAN IDs are the absolute authority. Then the usual sequence applies through TFTP or HTTP as appropriate. If the VLAN ID is not zero, any VLAN ID from the media server is ignored.