The callback function allows a caller in the queue to signal a callback request. A caller can then be called back by a VisualGroups user and does not have to wait in the queue. The function is available in the Enhanced and Standard license.

An audio message points the function out to the caller in a queue with activated callback function at an interval of about 90 seconds. The caller can signal the callback request by pressing the “#” key on his telephone. The call is disconnected and a user can call back when he is available again. See 3.9 Callback request: Calling callers back.

To configure the callback function for a queue, see This is how you create and edit a queue.