Makes sense...now does it matter which phone socket is used by the NCD?
Because I've tried connecting using either one. For some reason one of the phone socket says iiNet when I tried a speed test and the other shows TPG. It's currently connected to the "TPG" phone socket...however, my phone is still not working. It has dial tone but has a high pitch continuous beep. I can't dial out and I can't dial in either.
The "Phone 1" line on the TP Link router is not on too.