We provide the modem for all our NBN plans as they are sold as an Internet & Home Phone Bundle. As the Home Phone component of your bundle is encrypted for security, you will need to use our modem if you are to make and receive phone calls.
Can you provide me witth the unmodified fireware so i can update my modem?
Hi @leimeng6 . You want to keep your internet service with TPG but want to use another VOIP provider?
TPG don't have unmodified firmware and TP-Link don't have it on their website.
You could get a real voip phone and connect to LAN port on router; program phone with provider settings; probably not worth it.
You could get an analog telephone adaptor (ATA), connect it to LAN port on router; connect your standard phone to ATA; program ATA with your provider details.
You can use some other wifi router as long as it supports a VLAN ID=2 setting (not all do) and has the VOIP function built in. You then program in the SIP settings of your new provider.
I don't know what issues you might have in either keeping whatever phone number you have now or getting a new number.
This thread has posts from various users relating to voip.