This read-only integer reports the cumulative time, in seconds, that this specific port has spent carrying ingress (inbound) calls. Admins use per-port ingress time to see traffic directionality at the channel level, useful when diagnosing whether a trunk group is being used as expected for incoming calls. For example, a port dedicated to inbound toll-free traffic should show a much higher ingressTime than egressTime, and a reversal of that pattern would flag a routing misconfiguration.