Administrative (desired) sub-type of the PME. Possible values are: ieee2BaseTLO - PME shall operate as 2BaseTL-O ieee2BaseTLR - PME shall operate as 2BaseTL-R ieee10PassTSO - PME shall operate as 10PassTS-O ieee10PassTSR - PME shall operate as 10PassTS-R ieee2BaseTLor10PassTSR - PME shall operate as 2BaseTL-R or 10PassTS-R. Actual value will be set by -O link partner during initialization (handshake). ieee2BaseTLor10PassTSO - PME shall operate as 2BaseTL-O (preferred) or 10PassTS-O. Actual value will be set during initialization depending on -R link partner capability (i.e. if -R is incapable of the preferred 2BaseTL mode, 10PassTS will be used). ieee10PassTSor2BaseTLO - PME shall operate as 10PassTS-O (preferred) or 2BaseTL-O. Actual value will be set during initialization depending on -R link partner capability (i.e. if -R is incapable of the preferred 10PassTS mode, 2BaseTL will be used). Changing efmCuPmeAdminSubType is a traffic disruptive operation and as such SHALL be done when the link is Down. Attempts to change this object SHALL be ignored if the link is Up or Initializing. Attempts to change this object to an unsupported subtype (see efmCuPmeSubTypesSupported) SHALL be rejected. The current operational sub type is indicated by efmCuPmeOperSubType variable. If a Clause 45 MDIO Interface to the PMA/PMD is present, then this object combines values of the Port sub-type select bits and the PMA/PMD type selection bits in the 10P/2B PMA/PMD control register