This value records whether this failed call's bearer service was susceptible to clipping, per the description, either not-susceptible(1) or susceptible(2), a B-ISDN bearer attribute relevant to certain traffic types where cell loss can cause perceptible clipping (e.g. some voice or video encodings). A susceptible(2) value on a call whose failure cause relates to cell loss or congestion suggests the actual user-visible symptom for that specific failed call would have been audible/visible clipping had it continued rather than just a clean call teardown. This is a niche field mainly useful when correlating failure causes with expected end-user symptoms for latency/loss-sensitive services.