The specified ATM address of the BUS on the interface
of interest. Note that setting this object will have
the side effect of reinitializing the BUS and
consequently dropping all clients connected to it. If
this object is not specified at row creation time then
the BUS will choose a value for itself and attempt to
register with the switch with that value. If an
address is specified which is not acceptable to the
switch then the busOperStatus will remain inactive
until an acceptable address is set.