This read-write Integer32, ranging from 250 to 10000 milliseconds, sets the timeout for Network Signaling Event (NSE) packets used in VoIP call signaling. An admin cares because a timeout set too short can cause premature retransmissions or false failure detection on a healthy but slightly slow network path. For example, on a satellite or long-haul WAN link with higher round-trip latency, an admin might raise this timer toward the 10000ms ceiling to avoid spurious NSE timeouts.