This object indicates if the channels are
swapped for channels C and D as reported through
cable diagnostics.
MDI : Channel C received on MDI[3], Channel D on MDI[2]
MDIX : Channel C received on MDI[2], Channel D on MDI[3].
Unspecified : This object is unavailable or not reported.
The value of this object is valid when the value of
the hpicfXcvrDiagnostics object is VCT or other.