This read-only INTEGER reports the Call Type for the call on this interface, either svc(1) for a switched virtual circuit set up dynamically via signaling, or spvc(2) for a soft permanent virtual circuit configured to be automatically re-established. An administrator checks this to know whether a given connection was signaled on demand by an end system or is a provisioned SPVC the switch itself maintains and will re-signal after a failure. For example, seeing cwspCallType report spvc(2) for a connection that just dropped tells an operator the switch should automatically attempt to re-establish it, unlike a plain svc(1) call which requires the originating end system to re-signal.