@Johnt5152 

HELLO

You are absolutely correct. The TP-Link Archer BE3600 is only a router, not a modem. Here is the breakdown of why it won't connect and how to fix it:

• The ISP Hub: Your BT Home Hub is a 2-in-1 device (a modem and a router). The built-in modem is what allows it to connect directly to the 5C Master socket.
• The BE3600: High-performance third-party routers typically do not include built-in modems. They require an internet connection that has already been decoded by a modem.

How to fix this:
To use your BE3600 with your current BT line (VDSL/FTTC), you need to purchase a separate standalone VDSL modem.
Your setup will need to look like this:
BT 5C Master Socket ➔ Standalone VDSL Modem (e.g., Openreach Huawei HG612 or DrayTek Vigor 130) ➔ Archer BE3600

  @waseemadiga Thank you.. 

I guess I can't plug the TP3600 into the BT home hub? And just use the BT as a modem

  @Johnt5152 

Hi

1. Using the BT Home Hub as a modem:
You can plug the BE3600 into the BT Hub (BT LAN port to TP-Link WAN port). However, standard BT Hubs do not have a true "Modem Only" (Bridge) mode. If he does this, he needs to turn off the BT Hub's Wi-Fi.
Note: This creates a "Double NAT," which is fine for basic web browsing but can cause strict NAT issues for online gaming or port forwarding.
2. Buying a combined Modem/Router vs. Keeping the BE3600:

• Combined Unit: Easier to set up, fewer cables, and uses only one wall plug.
• Keeping the BE3600 (Separate): The BE3600 will likely provide vastly superior Wi-Fi speed, range, and advanced features compared to a standard combined unit.