Mitel 6867i Administrator's Manual page 283

Example 1
The following is an example of a custom time zone configuration in the configuration files using
relative time (for EST):
time zone name: Custom
dst start relative date: 1 #relative
dst end relative date: 1 #relative
time zone minutes: 300
dst minutes: 60
Example 2
The following is an example of a custom time zone configuration in the configuration files using
absolute time:
time zone name: Custom
dst start relative date: 0 #absolute
dst end relative date: 0 #absolute
#start of DST
dst start month: 3 #March
dst start week: 2 #second full week
dst start day: 1 #Sunday
#End of DST
dst end month: 11 #November
dst end week: 1 #first full week
dst end day: 1 #Sunday
DHCP TIME OFFSET (OPTION 2) SUPPORT
DHCP Option 42 enables the phone to be configured with the Network Time Protocol (NTP)
server addresses. However, NTP provides the Coordinated Universal Time (UTC) time so the
phone requires the offset from UTC in order to deliver the correct local time.
A User or Administrator can set the offset of UTC using DHCP Option 2.
An Administrator can enable Option 2 in the configuration files by setting the parameter "time
zone name". If this parameter contains the DP-Dhcp value, the phone derives the time and
date from UTC and the time offset offered by the DHCP server.
Using the IP Phone UI, a User or Administrator can enable the phone to use DHCP Option 2
by setting the following values from the Country Code list on the phone:
COUNTRY NAME
Dhcp
Operational Features
COUNTRY CODE
DP
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