Cisco 521SG Administration Guide - Page 190

Configuring Regional Parameters and Supplementary Services Localizing Your IP Phone 7 Field Time Zone Description Selects the number of hours to add to GMT to generate the local time for caller ID generation. Choices are GMT-12:00, GMT-11:00,..., GMT, GMT+01:00, GMT+02:00, ..., GMT+13:00. Defaults to GMT-08:00. Time Offset (HH/ Enter the offset from GMT to use for the local system time. mm) Daylight Saving Time Rule Enter the rule for calculating daylight saving time. See Configuring Daylight Saving Time. Daylight Saving Enable Select yes to enable or no to disable DST on the phone. This setting affects all lines (extensions) on the phone. Dictionary Server Defines the location of the dictionary server, the languages Script available, and the associated dictionary. See Creating a Dictionary Server Script. Language Selection Specifies the default language. The value must match one of the languages supported by the dictionary server. The script (dx value) is: Defaults to blank; the maximum number of characters is 512. For example: Spanish Managing the Time and Date Cisco IP phones obtain the time settings in one of three ways: • NTP Server-When the phone boots up, it tries to contact the first Network Time Protocol (NTP) server to get the time. The phone periodically synchronizes its time with the NTP server. The synchronization period is fixed at 1 hour. Between updates the phone tracks time with its internal clock. • SIP Messages-Each SIP message (request or response) sent to the phone could contain a Date header with the current time information. If the header is present, the phone uses it to set its clock. Cisco Small Business SPA300 Series, SPA500 Series, and WIP310 IP Phone Administration Guide 189