10.21.3.6 Cut

A cut request should have an object as parameter, and the object should have a member call_id that specifies the identifier of the active call to cut.

This is much like an ordinary cut (i.e. (!)/0), in that all alternatives for the target call as well as for any more recent active calls are pruned, and the pruned calls are no longer active.

In (the unlikely) case the cut caused failure or an exception to be thrown, this is reported back in the same way as the original call request. In the expected case, when the cut just succeeds, a JSON null value is returned as the result. In either case, the target call, and any more recent active callse, are closed.