Use Communication Manager to set the daylight-saving time rules. Features, such as time-of-day routing and call detail recording (CDR) adjust automatically to daylight-saving time due to the rules. The correct date and time ensure that the CDR records are correct. You can set daylight-saving time rules to transition to and from daylight-saving time outside of normal business hours. Therefore, the number of affected CDR records is small.

You can set up 15 customized rules for daylight-saving time. With this setting, Communication Manager administrators with servers in different time zones can set up a rule for each server. A daylight-saving time rule specifies the exact time when you want to transition to and from daylight-saving time. The rule also specifies the increment at which to transition, for example, 1 hour.