No Voip Phone RUTX50 with Telstra/ Tangerine SIM

I have previously been using an Optus SIM with Automatic helper assignment Off and all worked well.
I just replaced the SIM with a Telstra Sim and I have No service on my voip phones.
I just updated the firmware with RUTX_R_00.07.06.1, and i thought this had worked as i noticed I temporaily had service then after a reboot its all gone again.

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