Aastra 480i Administrator's Manual page 230

# The "aastra.cfg" file configures the settings server wide, while
# the "<mac>.cfg" file configures only the phone with the MAC
# address for which the file is named (for example,
# "00085d0304f4.cfg"). The settings in the "aastra.cfg" file will
# be overridden by settings which also appear in the "<mac>.cfg"
file.
#-----------------------------------------------------------------
# DHCP Setting
# =============
#dhcp: 1 # DHCP enabled.
# DHCP:
# 0 = false, means DHCP is disabled.
# 1 = true, means DHCP is enabled.
#
# Notes:
#
# DHCP is normally set from the Options list on the phone or
# the web interface
#
# If DHCP is disabled, the following network settings will
# have to be configured manually either through the configuration
# files, the Options List in the phone, or the Web Client: IP
# Address (of the phone), Subnet Mask, Gateway, DNS, and TFTP
# Server.
#-----------------------------------------------------------------
# Network Settings
# = = = = = = = = =
# Notes: If DHCP is enabled, you do not need to set these network
# settings. Although depending on you DHCP server configuration
# you may still have to set the dns address.
222 IP Phone SIP Admin Guide