1.3 Call Forwarding (FWD)/Do Not Disturb (DND) Features
Feature Guide 53
1.3.1.3 Do Not Disturb (DND)
Description
An extension user can make use of the Do Not Disturb (DND) feature. If this feature is set, calls will not
arrive at the extension, but arrive at other extension by using the Idle Extension Hunting feature (→ 1.2.1
Idle Extension Hunting) or the Intercept Routing—Busy/DND feature (→ 1.1.1.4 Intercept Routing). When
a destination cannot be found, the calling extension will hear the DND tone, while the calling outside party
will hear a busy tone.
Conditions
• DND for CO Line Calls/Intercom Calls
The DND feature can be set for CO line calls, for intercom calls, or for both of them by the extension
user.
• DSS button in DND Mode
The DSS button light will turn red if the assigned extension has set DND.
• DND Override
An extension in DND mode can be called by other extension users who are allowed to override DND
based on their Class of Service (COS) (→ DND Override [507]).
• Paging DND
It is programmable whether the PBX pages extensions in DND mode through system programming. (→
1.14.1 Paging)
• Intercept Routing—Busy/DND
If a call arrives at an extension which is in DND mode, the call can be redirected to the preprogrammed
destination via the Intercept Routing—Busy/DND feature.
• Idle Extension Hunting
While searching for an idle extension within an idle extension hunting group, any extension which has
DND set will be skipped. The call will go to the next extension in the group, not to the Intercept
Routing—Busy/DND destination.
• If a CO line call arrives through a public line and is directed to an extension which is in DND mode, and
if the Intercept Routing—Busy/DND destination is not available and furthermore there is no available
extension in the extension's idle extension hunting group, the original destination will ring even though
it is in DND mode.
• Calls from a doorphone arrive at an extension even when the extension is in DND mode.
User Manual References
1.2.4 When the Dialed Line is Busy or There is No Answer
1.7.2 Do Not Disturb (DND)
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