Comments I saw elsewhere appeared to infer that the connectors used by Telstra previously didn't have a broad enough frequency response to carry the re-jigged nbn co HFC signals. As now the HFC network needs to convey both DVB-C as well as broadband required under the MTM plan.
Good like Australia, here on the east island, we kind of feel your pain, but our 85%+ ftth network is coming on nicely, so we get to read all about the nbn issues before you do.
Biting the hand that feeds IT
