When I joined PN VDSL they sent me the standard pre-configured thompson router. Which connected to an ECI modem.
I later changed to a Billion 8800nl modem/router. I accept that I had to set up my username and password in the router in order to connect to PN.
Having just checked the page where these details were entered, I find both boxes empty! My connection is working fine which is why I'm confused.