Call processing

In telecommunication, the term call processing has the following meanings:

The sequence of operations performed by a switching system from the acceptance of an incoming call through the final disposition of the call. See call control for a more complete description
The end-to-end sequence of operations performed by a network from the instant a call attempt is initiated until the instant the call release is completed.
In data transmission, the operations required to complete all three phases of an information transfer transaction.