Has anyone had any luck getting Bluetooth DUN working on the Treo 650?

I have a GSM 650 on T-Mobile & N800.

All the APN settings are correct from the setup and I'm trying with DUN mode enabled on the treo - but each time I try to connect the N800 reports - "Connection Failed" and the Treo pops up with a message "Network Response - Operation Failed".


I've seen reports here that the same setup works on the 770 - but have any N800 users had any luck here?