Wildix

Wildix

Hi, 

Has anyone got the phone bridge up and running with Wildix?
I'm having a nightmare with it.

Zoho sees the client just fine, even tries to dial but then fails with an error message 

Dialed number is not reachable



Our provider has enabled the bridge, I can see that in zoho.  
Wildix sees the zoho user and has imported our users from zoho just fine
Phone numbers have the 'call' option enabled on contacts
What am I missing?