First step for publishing using RCC websockets direct to Refinitiv is to get an Access Token from RDP using REST API request-response. This means a call to the endpoint "api.refinitiv.com" which is available over the Internet.
However is there any equivalent to "api.refinitiv.com" if you want to make this communication using Delivery Direct private comms lines rather than via Internet?
The domain "api.refinitiv.biz" does not seem to exist for example, is there a different endpoint to use?
Or is it only possible over Internet?
I have checked with the RDP APIs Gateway team, the team confirms the RDP Auth Service is available on the Delivery Direct network for the clients via the following links based on the client region/location:
Example: If the client is in EMEA, the client can use the following API Endpoint URL to get the Access Token from RDP
Note: The client requires Delivery Direct Network access.