How to Configuring Do Not Disturb in Call Manager Express ?

The Do Not Disturb (DND) feature allows phone users to disable audible ringing for incoming calls. When DND is enabled, incoming calls do not ring on the phone, however there is visual alerting and the call information displays, and a call can be answered if desired. When a local IP phone calls another local IP phone that is in the DND state, the message "Ring out DND" displays on the calling phone indicating that the target phone is in the DND state. Phone users can toggle DND on and off by using the DND soft key in the idle or ringing call states. A SSCP phone user can toggle DND on or off in the ringing state only if DND in not already active on the phone. If DND is already active when a new call comes in, the SCCP phone user cannot change the DND state by pressing the DND soft key. If an SSCP phone user toggles DND on during an incoming call, the DND state remains active for the current call only. If a SIP phone user toggles DND on during an incoming call, the DND state remains active during the current call and for all future calls until the user explicitly toggles DND off.