I have been trying to connect to my ISP with the 330 but receive Error 678 cannot make a connection. Downloaded latest software and the Error is 721 still "cannot make a connection". If I substitute my DG834G I connect immediately so the line and connection are OK. All the lights and diagnostics on the 330 are OK but at the end it fails to connect. It worked OK before with the software I have but for some reason it will not now connect to the ISP. I am running XP Pro with updates and no firewalls. Suggestions appreciated.