First of all I want to say thank you!
I found the modem has not WAN ethernet port! It is not work as a router with ethernet port.
Usually one of the four ethernet port is a WAN port. But my modem is not.

everyone! I have a ADSL MODEM with wireless,4 ports switch.It work with TI7300adgw and tentw1130. Now I no use the ADSL line, but I want to use the MODEM as a router only with wireless. So, Can I flash the router's firmware let's work as a wireless router with ethernet ports? I know the ADSL modem c...

I have a adsl modem with router.cpu is ar7wrd (tendet 7300gwd),because the adsl changed with optial,but the optial modem not surport router. so I think use the router of adsl modem. is it possible?