The Feature Code section is used to configure the dial codes that users can enter from their phones to activate, deactivate, or access PBX telephony features. These codes provide quick access to common functions such as voicemail, call pickup, call forwarding, Do Not Disturb, call transfer, call monitoring, intercom, and call parking.
Voicemail
The Voicemail settings define the feature codes used to access and manage voicemail services.

VoiceMail Main: Defines the code used to access the main voicemail menu.
Check-Voicemail: Defines the code used by users to check their voicemail messages.
Voicemail To Extension: Defines the code pattern used to leave voicemail for a specific extension.
Reset
The Reset settings define the code used to restore feature-related settings to their default behavior.

Reset-To-Default: Defines the code used to reset configured telephony features back to their default state.
Call Pickup
The Call Pickup settings define the codes used to answer calls ringing on another extension or within a pickup group.

Extension Pickup: Defines the code used to pick up a call ringing on a specific extension.
Pickup: Defines the general pickup code used to answer ringing calls within an allowed pickup group.
Call Forwarding
The Call Forwarding settings define the codes used to enable or disable forwarding behavior for extensions.

Disable-Call-Forward-No-Answer: Defines the code used to disable forwarding when a call is not answered.
Enable-Call-Forward-No-Answer: Defines the code pattern used to enable forwarding when a call is not answered.
Disable-Busy-Call-Forward: Defines the code used to disable forwarding when the extension is busy.
Enable-Busy-Call-Forward: Defines the code pattern used to enable forwarding when the extension is busy.
Disable-Forward-All-Calls: Defines the code used to disable unconditional call forwarding.
Enable-Forward-All-Calls: Defines the code pattern used to forward all calls to another destination.
Do Not Disturb
The DND settings define the codes used to control Do Not Disturb status for an extension.

Disable-DND: Defines the code used to turn off Do Not Disturb.
Enable-DND: Defines the code used to turn on Do Not Disturb.
Transfer
The Transfer settings define the codes and timeout behavior used during call transfer operations.

Attended Timeout: Defines the timeout value used for attended transfer attempts.
Attended Transfer: Defines the code used to initiate an attended transfer.
Blind Transfer: Defines the code used to initiate a blind transfer.
Call Monitor
The Call Monitor settings define the codes used for call monitoring features.

Bargein: Defines the code used to join an active call when permitted.
Listen: Defines the code used to listen to an active call without participating.
Whisper: Defines the code used to speak to one party in an active call without the other party hearing.
Intercom
The Intercom setting defines the code used to initiate intercom communication with supported extensions or devices.

Intercom: Defines the feature code used to start an intercom call.
Call Parking
The Call Parking settings define the codes and range used to place calls on hold in a parking slot and retrieve them later.

Call Parking Timeout: Defines how long a parked call remains available before it is returned or handled by the system.
Parking Range: Defines the range of parking slots available for parked calls.
Call Park: Defines the code used to park an active call.