When your Comtrend VR-3031eu modem is delivered it will have three Ethernet ports for internet and one for O2 TV. Setting ports for the MULTI service can be done via web configuration.
First go to the link http://10.0.0.138/.
A login window will appear. To log in you need to know your username and password. If you have not changed them yet, both your username and password will be “admin”.
Next, choose Advanced Setup and then LAN Bundling in the left-hand menu.
A page with port configuration will appear on the right-hand side. Choose IPTV Multi on the second line, and save by clicking on Apply/Save.
Saving your changes will take about 10 seconds. All the ports are set.