Initiating Internal Callback on Busy
If you have initiated a callback, as soon as the other subscriber has hung up the receiver to end the call, the PBX calls you. If you then pick up the receiver, the other subscriber will be called. If the other subscriber picks up the receiver, the connection for the call will be established. This deletes the callback procedure in the PBX.
Important: On system phones, this function is called via the menu/phone app (optional, see manual for the phone). Important: To use this function at ISDN phones or to delete it again, this function must be supported via a function key or via the menu by the respective phone (optional, see manual for the phone).
Note: You can also use this function on analogue phones, where it can be performed via the T-Net function key/menu (optional, see manual for the phone).If the connection you are calling is busy, proceed as follows:
1.Press the Flash key or the Query key.
2.Dial *37#.
You will hear the confirmation tone.
3.Hang up the receiver.
As soon as the connection is no longer busy, you are called by the public exchange for a period of 20 seconds.
4.Pick up the receiver to the make the callback.
Note: If you do not pick up the receiver within the 20 seconds during which the PBX calls you, the callback request will be deleted.If you pick up the receiver, the subscriber will be called.