Not support. You cannot watch live broadcasts directly.
Here are more details about watching live broadcasts through IPTV function:
1. The IPTV function must be activated on the broadband service at your home;
2. After the IPTV function is enabled on your home broadband, the optical modem connects to the router, and you need to configure the IPTV function on the router;
3. Once configured, set one of the router's ports as the IPTV port, and connect the TV set-top box to the IPTV port on the router to enjoy watching TV programs.
Does it help?