Initiating Internal Callback on No Response
If you initiated a callback, you call the subscriber you did not reach previously as soon as he is available again.
Important: On the 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: Some analogue phones permit this function via the T-Net function key/menu (optional, see manual for the phone).If the subscriber does not answer your call proceed as follows:
1.Press the Flash key or the Query key.
2.Dial *37#.
3.Hang up the receiver. You are called as soon as the subscriber is available.
4.Pick up the receiver to the make the callback. If you do not pick up within 20 seconds, the callback is deleted.