Pickup
You can use the pick-up function to take a call on your own phone that was being made to another phone.
*Description of the operation under Pickup
Requirements for use: 
Permission granted in the PBX for Pickup
Function key with the speed dial for the phone that is to be called configured on it.
Boss/secretary telephone use case 
The pickup function allows the boss telephone to be protected from direct calls by signalling and accepting them in the secretary office.
The following settings/function keys are required for the application described here:
Secretary telephone (can only be set up at a COMfortel D-400/D-600)
Open pickup list auto. active
Play pickup tone active
Function key Speed dial for call number boss telephone, with the following activated options: PickupPickup-choice on key-pressSignal presence
Boss telephone
Function key Mute ringing to switch the phone to silent if required

Function for an incoming call:
The call is displayed on the boss phone, the phone remains silent.
The pickup menu appears on the secretary phone and an attention tone is played.
Options:
The secretary phone answers the call, the boss phone stops ringing.
The boss phone answers the call, the secretary phone stops ringing, the speed dialling key on the secretary phone lights up red.

The following function keys are also useful:
Secretary telephone
Function key Pickup list
Turns on/off notification via pickup list of new calls for the boss phone. This way, there are no annoying notification tones and displays when the boss/secretary function is not needed.
Function key SIP message for the call number of the boss telephone with a corresponding info text, e.g. "Important call for you!".
In this way, visual and acoustic information can be provided in case of need. Silent ringing on the boss phone does not affect the volume for this notification. Wipe to the left to delete the message.
Boss telephone
Function key SIP message for the call number of the secretary telephone with a corresponding info text, e.g. "Please put through!".
This allows a response to be sent that is also displayed in the call. Wipe to the left to delete the message.
Configuration
Web interface: 
Function keys > Choose a key > Function: Speed dial
Pickup-choice on key-press
Do not show in pickup list
Pickup of connected calls
Function keys > Choose a key > Function: Pickups
*Details about the settings are in Function keys
Phone: 
Settings > Function keys > Speed dial > Pickup-choice on key-press
Settings > Function keys > Choose a key > Function: Speed dial
Pickup-choice on key-press
Do not show in pickup list
Pickup of connected calls
Settings > Function keys > Choose a key > Function: Pickups
*Details about the settings are in Function keys
AppPickups
*Details about the settings are in Pickup
Provisioning: 
*Further help in the Auerswald DokuWiki