By a "Telstra issue" they might mean it's a problem with the line or the port it's on, which I guess is an issue that only Telstra can repair.
If there is nothing showing for your postcode, it means it's not likely to be a widespread outage, but one that may impact only a few customers, or simply a fault that has developed on the line leading to your village.
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Please note: I am not a Telstra employee and any posts or opinions are entirely my own and don't reflect any official company position.