Cisco SPA501G Administration Guide - Page 191

Configuring Regional Parameters and Supplementary Services Localizing Your IP Phone 7 • Manual Setup-The time and date can be entered manually by using the IP phone screen or the phone web user interface. However, this value is overwritten by the NTP time or SIP Message Date whenever they are available to the phone. Manual setup requires that you enter the time in 24-hour format only. 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 by using the phone web user interface or through provisioning. This time can be further offset by the Time Offset (HH/mm) parameter. This parameter must be entered in 24-hour format and can also be configured from the IP phone screen. 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 the 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. The format is: 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 value is -1, the time will change on the weekday on or before the end of the month; the last occurrence of a weekday in that month. Cisco Small Business SPA300 Series, SPA500 Series, and WIP310 IP Phone Administration Guide 190