SCS send blocked state. If the connection is waiting to send an
   SCS control block message, the SCS send blocked state indicates
   what kind of message it is waiting to send. Possible displays are:

    ACCP_PEND Waiting to send an accept request.
    CLEAR     Not blocked.
    CON_PEND  Waiting to send a connection request.
    CR_PEND   Waiting to send credit.
    DCR_PEND  Waiting to send credit in preparation for a disconnect.
    DISC_PEND Waiting to send a disconnect request.
    REJ_PEND  Waiting to send a reject request.