This read-only value reports whether this leaf's Leaf Initiated Join is not-lij (statically provisioned, not a dynamic join), root-lij (the root of the multipoint tree), or network-lij (a network-side join), classifying the role this endpoint plays in a PMP SVC's join topology. Knowing the LIJ type explains how a given leaf came to be part of the multipoint call, which matters when diagnosing unexpected leaves appearing in or disappearing from a broadcast-style ATM service. An engineer investigating why a leaf unexpectedly dropped from a video PMP tree would check whether cktAtmLijType reported root-lij(2) to confirm it was the tree's root rather than a dynamically joined leaf that simply timed out.