Reports the ASCU status - ASCUs configured on the circuit
can be rejected at the host and would then be marked REJECT. Also,
ASCUs configured after the circuit has been established are not added
dynamically to the circuit but are marked NEW and get added when the
circuit gets established the next time. ASCUs waiting for an accept or
reject response from the host are marked as PENDING. ASCUs that were
accepted by the host are marked OK.