Thanks Maverick and other guys for your help.

The provisioning config was the culprit.

My VFX phone number is up and running.

The new firmware installed is 5.1.9. (someone mentioned 5.1.12 as being the latest)

I have abandoned Bridge mode too and stuck with NAT mode.
The phones did not seem to work in bridge mode or I missed some reconfiguration.
For now I have hung the SPA on my switch alongside the rest of my computer stuff.
I will experiment some more at a later date.

Cheers

Gordy