Night Service redirects your sys-tem’s calls to their Night Modedestination. Typically, the atten-dant or supervisor activates NightService after normal working hours, when most of your co-work-ers are unavailable to answer calls. If you are expected to put thesystem in the Night Mode, your phone will have a Night key.Check with your Communications Manager.To activate or deactivate Night Service:1. Do not lift the handset.2. Press your Night key.Your Communications Manager can tell you ifyou have a Night key, and which outside lines yourNight key switches.135Night Service reroutesyour system’s calls afterhours.Night Service / Night Ring