This read-create object, together with p2mpTlThreshType, identifies which entry in the p2mpThresholdTable is responsible for triggering this particular timeline capture, with a value of none(0) meaning the timeline has no threshold trigger associated with it at all. It lets an admin link a timeline data capture to the specific radio-signal condition that should start it. For example, setting p2mpTlThreshAttribute to a signal-power attribute lets the admin have the timeline automatically begin capturing detailed data exactly when that power threshold is crossed.