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Second internet port

Level 1a
I have a tpg fttb ntu unit and modem in the living room.

When I plug in my pc into a port in another room upstairs, it causes the ntu and modem to crap out. The ntu lights will start flashing and there wont be internet. Ill then have to turn the ntu and modem off and on again after disconnecting the second internet port.

Is this happening because the ntu/modem is connected using a phone cable, whilst im using an ethernet cable to connect the second port?

Hi @sleepyfish,


Welcome to the community!


This is how I understand the situation, correct me if im wrong. I'd to clarify if you connect the FTTB modem/router to a Ethernet port connected to the room upstairs where the PC is connected?