Initiating External 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.
Requirements:
• Service feature CCNR (callback on no response) is enabled by the network provider.
• Use of an external S0 port for the call (optional, see Technical Data in the Instructions)
Important: On system phones, this function is called via the menu/phone app (optional, see manual for the phone).
Note: 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#.
Note: If you do not hear a confirmation tone, the callback request was not successful.3.Hang up the receiver. You are called as soon as the subscriber is available.
Note: A callback will be stored for up to 45 minutes.4.Pick up the receiver to the make the callback. If you do not pick up within 20 seconds, the callback is deleted.