Refuses a connection request.
    On Alpha and Integrity server systems, this service accepts 64-
    bit addresses.
    Format
      SYS$ICC_REJECT  conn_handle, [reject_buf], [reject_buf_len],
                      [reason]
    C Prototype
      int sys$icc_reject  (unsigned int conn_handle, char *
                          reject_buf, unsigned int reject_buf_len,
                          unsigned int reason);
Additional Information:
explode
extract