TLDR: 1. Can I use my CG3000 modem router on Telstra's cable network? 2. Is there any other alternative to expensive cable from Optus/Telstra? (Location is 2165). ADSL not available, NBN not available. 100GB+ preferred. I've been with Optus cable for almost 14 years. Why? Pair gain system. Makes me vomit in my mouth just saying that filthy word. ADSL was never an option for broadband once it became mainstream. Before that, my dial up speeds were constantly 28-32kbps. So I just dealt with it, and expensive cable internet became my reality. I don't do as much on the internet anymore, so I am happy to downgrade from my Optus 300GB @ $85/month plan to something cheaper. Telstra have a 100GB @ $75/month, but they claim I need to use their Telstra Gateway Max cable modem (which is just a rebranded Netgear C6300). I already have a (older) Netgear CG3000 from Optus. As far as I know, they're both DOCSIS 3.0, but I don't know if my old one is compatible with Telstra, or if I have to jump through any hoops to get it working. Maybe I can buy a cheap unwanted one on eBay? I asked if Telstra could get me off pair gain system and they said no. So... aside from cable or using a WIFI dongle, I don't think I have much of a choice. Optus customer retention doesn't seem to care, and Telstra sales doesn't seem to offer any incentives for me to join.