Can I have two modem routers in one house?

[astern]

It is DSL and I already have one modem router which is located upstairs and I was wondering if I can connect another Modem router, I have a DSL/Telephone line already in the room where I would like to add one which works with the modem router I currently have but I would like to add another, is that possible? Thanks.

 

[astern]

Sorry I mean I have used the DSL/Modem line in the other room with my older modem router and that worked.