State the real opening hours.
Name the days and times when callers can reach a person. For international callers, specify the time zone if ambiguity is likely. Avoid “usual office hours” when visitors may not know your schedule.
Choose a useful alternative.
Offer a monitored email address, voicemail or another contact only when that route works. Explain when a message is handled and avoid implying an urgent response if the team is away.
Plan weekends and exceptions.
A regular weekly schedule does not cover holidays and temporary closures. Check the time rules in the phone system and maintain special messages for exceptions. Review summer-time changes and any time-zone setting in the target system.
Test both sides of closing time.
Call shortly before and after the scheduled change. Confirm the correct message plays and the following action matches the words. Review voicemail recording, forwarding and call ending with the person responsible for the system.