The Interface Index assigned to a SONET LTE. This is an
interface with ifType sonet(39). The value of this object
must be unique among all instances of
cApsChanConfigIfIndex. In other words, a particular
SONET LTE can only be configured n one APS group.
This object cannot be set if the
cApsChanConfigGroupName instance associated with this
row is equal to an instance of cApsConfigName and the
corresponding cApsConfigRowStatus object is set to
active. In other words this value cannot be changed if the
APS group is active. However, This value may be changed if
the cApsConfigRowStatus value is equal to notInService.