15        AutoNegotiation Error
   14        Speed Changed
   13        Duplex Changed
   12        Page Receive
   11        AutoNegotiation Completed
   10        Link Status Changed
   9         Symbol Error
   8         False Carrier
   7         FIFO Over Underflow
   6         MDI Crossover Changed
   5         Downshift Interupt
   4         Energy Detect Changed
   3         Reserved
   2         DTE power detection status changed
   1         Polarity Changed
   0         Jabber