ATA Voice Field Reference
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Cisco Small Business ATA Administration Guide 152
B
Daylight Saving
Time Rule
Enter the rule for calculating daylight saving time; it should
include the start, end, and save values. This rule is
comprised of three fields. Each field is separated by ; (a
semicolon) as shown below. Optional values inside [ ] (the
brackets) are assumed to be 0 if they are not specified.
Midnight is represented by 0:0:0 of the given date.
SYNTAX: Start = <start-time>; end=<end-time>; save =
<save-time>.
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 <save-time> value is the number of hours, minutes,
and/or seconds to add to the current time during daylight
saving time. The <save-time> value can be preceded by a
negative (-) sign if subtraction is desired instead of addition.
The <save-time> value is in this format: [/[+|-]HH:[mm[:ss]]]
The <month> value equals any value in the range 1-12
(January-December).
The <day> value equals [+|-] any 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.
The abbreviation HH stands for hours (0-23).
The abbreviation mm stands for minutes (0-59).
The abbreviation ss stands for seconds (0-59).
The default Daylight Saving Time Rule is start=4/1/
7;end=10/-1/7;save=1.
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