Permission settings allow administrators to define which features the extension can use. The permissions to jump into calls and listen to conversations may be legally restricted in certain countries, so use extra caution here. The permission to override DND is useful for assistant extensions that are responsible for screening calls.

When entering extensions in this section, use a space as a separator if specifying multiple extensions.
You may use wildcards, for example, an asterisk (*), to match all extensions of the domain.
Allow Call Barge to these Extensions
Call Barge-in allows a third party to barge into an in-process call. Typically, this third person is either a secretary contacting the boss or a co-worker in the next cube who needs help on a call. The permissions to jump into calls and listen to conversations may be legally restricted in certain countries; please use extra caution here. Once permission has been set, Call Barge-in can be activated using the *81
star code.
Allow Teaching (Whisper Mode) to these Extensions
Call Teach mode allows a third party on a line with only one of the parties knowing. This is typically useful in a call centre when a trainer wants to offer tips to a new agent without the customer knowing. Once permission has been set, Call Teach can be activated using the *82
star code.
Allow Audio Mix-In to these extensions
This mode allows the extension to mix audio into conversations without receiving the audio stream.
Call the following extensions even if DND is set
If this flag is set, the account will be permitted to call the extension indicated in this field, even if that extension is currently on DND. This applies only to DND which has been set on the system. The permission to override DND is useful for extensions being used by assistants who are responsible for screening calls.
Domain accounts that can be put into night mode
This feature enables users to forward domain accounts (e.g., auto attendant, hunt group, etc.) to their own extension. Domain accounts that are entered into this field can be put into night mode by this user. Star code *80 is used to activate this feature.