Specifications

Chapter 9 - Miscellaneous Configuration Administration Manual (SIP/MGCP Version)
AT-VP504E FXS 76
3. If you are using customized time zones, set the custom time
zone POSIX string in the
sntpTimeZoneCustomTimeZone
Configuration variable (under sntpTimeZoneConfigGroup ).
The default POSIX string is:
EST5DST4,M4.1.0/02:00:00,M10.5.0/02:00:00
Defining a
Custom Time
Zone
To define a custom time zone, you must enter a valid POSIX (Portable
Operating System Interface) string. A POSIX string is a set of standard
operating system interfaces based on the UNIX operating system. This
standard is used in the time zone string in the format:
STD[OFFSET]DLST[OFFSET],[START[/TIME]],[END[/TIME]]
Table 34: Custom Time Zone Settings
Setting Definition
STD and DLST Three or more characters for the standard (STD) or
alternative daylight saving time (DLST) time zone.
Only STD is mandatory. If DLST is not supplied, the
daylight saving time does not apply. Lower and upper
case letters are allowed. All characters are allowed
except digits, leading colon (:), comma (,), minus (-),
plus (+), and ASCII NUL.
OFFSET Difference between the local time and the GMT time.
The offset has the format
h[h][:m[m][:s[s]]] . If no offset
is supplied for DLST, the alternative time is assumed
to be one hour ahead of standard time. One or more
digits can be used; the value is always interpreted as
a decimal number.
The hour value must be between 0 and 24. The
minute and seconds values, if present, must be
between 0 and 59. If preceded by a minus (-), the time
zone is east of the prime meridian, otherwise it is
west, which can be indicated by the preceding plus
sign (+). For example, New York time is GMT+5.