This counter provides the same restart-activity count as ciscoatmSigDetectRestarts, but for RESTART messages transmitted from this interface. This is this switch initiating that same drastic call-state-clearing action, so its incrementing means this switch or its signaling process just went through a restart event and is telling the far end to clear and reset all call state on the link, causing a visible blip across every active call on that interface. This counter incrementing right after this switch's ATM signaling process was manually restarted for a configuration change would be the expected, and fairly loud, side effect on every VC on that link.