Configuring Regional Parameters and Supplementary Services
Localizing Your IP Phone
Cisco Small Business SPA300 Series, SPA500 Series, and WIP310 IP Phone Administration Guide 192
7
The time served by the NTP Server and the SIP Date Header are expressed in
GMT time. The local time is obtained by offsetting the GMT according to the time
zone of the region.
The
Time Zone
parameter can be configured from the web page or through
provisioning. This time can be further offset by the
Time Offset (HH/mm
)
parameter, which must be entered in 24-hour format. This parameter can also be
configured from the phone’s LCD display.
NOTE The
Time Zone
and
Time Offset (HH/mm)
offset values are
not
applied to manual
time and date setup.
Configuring Daylight Saving Time
The phone supports auto adjustment for daylight saving time. You must set
Daylight Savings Time Enable
to yes and enter the DST rule. This option affects the
time stamp on
CallerID
.
To enter the rule for calculating DST, include the start, end, and save values
separated by semi-colons (;) as follows:
Start = start-time; end=end-time; save = save-time
For example, the default DST rule is
start=4/1/7;end=10/-1/7;save=1.
The
start-time
and
end-time
values specify the start and end dates and times of
daylight saving time. Each value is in this format:
month/day/ weekday[/HH:mm:ss]
The
month
value equals any value in the range 1-12 (January-December).
The
day
value equals any + or - value in the range 1-31. If day is 1, it means the
weekday on or before the end of the month (in other words the last occurrence of
weekday in that month).
The
weekday
value equals any value in the range 1-7 (Monday-Sunday). It can also
equal 0. If the weekday value is 0, this means that the date to start or end daylight
saving is exactly the date given. In that case, the day value must not be negative. If
the weekday value is not 0 and the day value is positive, then daylight saving starts
or ends on the weekday value on or after the date given. If the weekday value is
not 0 and the day value is negative, then daylight saving starts or ends on the
weekday value on or before the date given.
Optional time values:
HH
represents hours (0-23),
mm
represents minutes (0-59).
and
ss
represents seconds (0-59). Optional values inside brackets [ ] are assumed
to be 0 if not specified. Midnight is represented by 0:0:0 of the given date.
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