Hello ,
Welcome back to the Poly Community.
The difference between the UC Software and the ObiHai software is not just the difference in the actual interface but the XML structure the phone expects.
Therefore I cannot answer your 1st question and your SIP PABX provider needs to be consulted.
You can replicate the configuration example you provided from a UC perspective. On an ObiHai Phone go to System Management > Auto Provisioning and then untick method and ConfigURL and replace the ConfigURL string with:
http://Username:Password@uRL_or_IP_Of_Server/OBi${MAC}.xml
The phone then tries to download a correctly XML formatted file called OBI123456789012.xml where 123456789012 would be the real MAC address of the phone.
The above XML file is not the same structure as the UC Software format so please familiarise yourself with this format.
If you struggle with the above please work with whoever sold the VVX D230 to get this into Poly support.
In order to raise a support ticket, you need to work with your Poly reseller as they may need to do this for you.
End Customers are usually unable to open a ticket directly with Poly support. Available End User Poly services offerings are detailed here
If this is some sort of an Internet discounter providing your MAC address or your Poly devices serial will enable us to look up who would be able to support you. This may not be who you purchased the Poly device from.
Please ensure to provide some feedback if this reply has helped you so other users can profit from your experience.
Best Regards
Steffen Baier