This attribute specifies the operating mode of the PathAdmin. When
set to multiplexing the PathAdmin to multiplex voice calls to the
given atmConnection using single cell per voice packet transport.
All other calls will be multiplexed using AAL5 over the Trunk's
VCC. When set to mapping the PathAdmin will allocate a VCC per
LCh/n. In mapping mode the atmConnection should not be set. The
VCC chosen for a given connection can be seen in the LCh
localConnection attribute.