This read-only integer reports the cumulative time, in seconds, that this specific port has spent carrying egress (outbound) calls. It's the outbound counterpart to ingressTime, letting an admin see whether a port is being used mostly for outbound traffic as intended. For example, a port provisioned specifically for outbound long-distance calls showing low egressTime relative to its ingressTime would suggest that outbound routing isn't actually directing traffic to this port as configured.