Singtel 10Gbps Enhanced Plan still cannot use own router? must use their bundle TP-link router?
1. All Singtel 3Gbps/5Gbps/10Gbps plans can use your own router, with a catch.
2. Singtel ONR will be the main router. Your own router can be configured in two ways.
1) AP mode, no Double NAT, but your own router will lose many features not related to wireless.
Singtel also configures the bundled TP-Link HB810/HB611-SGST in AP mode.
No impact to wireless performance.
Ethernet Backhaul is also easier as you can put ONR in DB box, connect main node to the ONR 10G port, connect slave nodes to the ONT 1G ports.
2) Router mode, Double NAT, your own router will maintain major part of its own firmware features, but some features may not work due to Double NAT.
No impact to wireless performance.
But this may cause issues with Ethernet Backhaul if you need to form a mesh, depending on your network Infrastructure. Your slave nodes need to connect to the LAN ports of the main node and not ONR LAN ports.
3. More about Double NAT and its disadvantages.
https://kb.netgear.com/30186/What-is-double-NAT-and-why-is-it-bad
4. Because of the ONR, many power users have left SingTel I. Some power users choose to bridge Singtel ONT.
Average users should be fine with ONR.