3 ms·It is, technically. Good thing there's also phones and SMS.by dpcx 7y agoIt is, technically. Good thing there's also phones and SMS.wbl 7y agoI have heard a horror story involving a phone line multiplexed over fiber to an IX and someone used it as OOB.TeMPOraL 7y agoBoth of which increasingly work over the Internet on the backend, from what I hear.