This read-only Integer32 (1..100) reports the number of calls that can be traced concurrently on the switch, a figure that may vary over time depending on available system resources. An administrator queries this before starting a new connection trace to confirm the switch has spare tracing capacity, since the description directs the NMS to check this before creating a row in the cwspConnTraceCntlTable. For example, a management application checks cwspConnTraceAvail and defers launching a new trace if the count has dropped to zero because other traces are already in progress.