They were salaried engineers paid to carry, not for the calls. The people carrying were capable of initiating remedial action and of knowing which engineer to c

They were salaried engineers paid to carry, not for the calls. The people carrying were capable of initiating remedial action and of knowing which engineer to call if it really needed midnight engineering. We outsourced the simple triage by having pagers and the customer’s level 1 and level 2 teams had instructions for which pager to call.