This attribute gives the actual value of PathAdmin Atm mode that
the PathAdmin has decided on after negotiation with the far end
PathAdmin. This is only applicable to ATM cards since the mode on
non ATM hardware is not specified. The multiplexing mode implies
that all voice traffic will be multiplexed onto the Atm
atmConnection Vcc and all data will be multiplexed onto the Trunk
Atm atmConnection Vcc. The mapping mode implies that each
unique logical channel will be allocated its own Vcc. The mode
notApplicable implies either this is not ATM hardware or that no
Atm subcomponent exists under this or the peer PathAdmin.