IP Phone Boot-up process (from www.cisco.com)

1.      Inline Power (ILP)

o   Inline Power Initialization

On Phone: Mute, Headset, Speaker Buttons Are Illuminated

2.      Cisco Discovery Protocol (CDP) or Link Layer Discovery Protocol-Media Endpoint Discovery (LLDP-MED)

o   ILP Negotiation, Voice VLAN ID

Phone displays:“Configuring VLAN”

Phone settings:Settings=>NetCfg=>“Operational VLAN ID”

NOTE: LLDP-MED is supported as of IP Phone Firmware 8.3(3)

3.      Dynamic Host Configuration Protocol (DHCP)

o   IP Assignment, TFTP Server Allocation, DNS (optional)

Phone displays: “Configuring IP”(DNS is optional)

Phone settings: Settings=>NetCfg=>“DHCP Server”Settings=>NetCfg=>“IP Address”Settings=>NetCfg=>“TFTP Server X”

4.      Trivial File Transfer Protocol (TFTP)

o   Configuration File, IP Phone Firmware