Since then, I've given up on DD-WRT as it doesn's seem to support VLan port 621 only up to 15.

Instead I have moved to Tomato - Shibby which supports VLAN 621 and I configured it using these settings:

https://forum.lowyat.net/uploads/attach-7/p...-1342455882.jpg

However, I still can't connect to maxis.

Does anyone have the full set of settings required to get Tomato working? I have been reading this thread https://forum.lowyat.net/topic/2384890/+260 which would suggest it works. (I don't need VoIP) I just need to connect to the internet.

Any suggestions?

Thanks.