How to use ADSL 2 Router as WAN router?

[kankeniche]

I accidentally bought an ADSL2 Router with modem instead of WAN router. I can refund the thing so I must use what i have now

 

[kanewolf]

You probably can not use the ADSL router as an ethernet router. There are a few units that have an ethernet WAN port in addition to a DSL RJ11 port. IF this is one of those units that has an ehternet WAN port then you probably can use it.