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Cisco SIP IP Phone Administrator Guide
Chapter 3 Managing Cisco SIP IP Phones
Setting the Date, Time, and Daylight Saving Time
See Table 3-8 and Table 3-9 for an explanation on how these values work, depending on the
sntp_server parameter value.
• time_zone—(Required) Time zone in which the phone is located. Valid values are the time zone
abbreviations shown in Table 3-10. These abbreviations are case sensitive and must be in all capital
letters.
Table 3-10 Time Zone Abbreviations
Abbreviation GMT Offset Cities Time Zone Names
IDL GMT-12:00 Eniwetok IDL (International Date Line),
IDLW (International Date Line West)
NT GMT-11:00 Midway BT (Bering Time), NT (Nome Time)
AHST GMT-10:00 Hawaii AHST (Alaska-Hawaii Standard Time),
HST (Hawaiian Standard Time),
CAT (Central Alaska Time)
IMT GMT-09:30 Isle Marquises Isle Marquises
YST GMT-09:00 Yukon YST (Yukon Standard Time)
PST GMT-08:00 Los Angeles PST (Pacific Standard Time),
MST GMT-07:00 Phoenix MST (Mountain Standard Time),
PDT (Pacific Daylight Time)
CST GMT-06:00 Dallas, Mexico City CST (Central Standard Time),
MDT (Mountain Daylight Time), Chicago
EST GMT-05:00 New York EST (Eastan Standard Time),
CDT (Central Daylight Time), NYC
AST GMT-04:00 La Paz AST (Atlantic Standard Time),
EDT (Eastan Daylight Time)
NST GMT-03:30 Newfoundland NST (Newfoundland Standard Time)
BST GMT-03:00 Buenos Aires BST (Brazil Standard Time),
ADT ( Atlantic Daylight Time),
GST (Greenland Standard Time)
AT GMT-02:00 Mid-Atlantic AT (Azores Time)
WAT GMT-01:00 Azores WAT (West Africa Time)
GMT GMT 00:00 London GMT (Greenwich Mean Time),
WET (Western European Time),
UT (Universal Time)
CET GMT+01:00 Paris CET (Central European Time),
MET (Middle European Time),
BST (British Summer Time),
MEWT( Middle European Winter Time),
SWT (Swedish Winter Time),
FWT (French Winter Time)
EET GMT+02:00 Athens, Rome EET (Eastean European Time),
USSR-zone1,
MEST (Middle European Summer Time),
FST (French Summer Time)
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