Part of wader.common.statem.networkreg.NetworkRegStateMachine
| Returns | (type: defer.Deferred
) | |
| Raises | ex.NetworkTemporalyUnavailableError | If AT+COPS keeps replying +COPS: 0 (No network) |
| ex.NetworkRegistrationError | Raised when we can't register with the network we want to register to | |