Alfort Greetings & Welcome to Microsoft Q&A forum!
Was it working earlier?
Similarly, when using an API, which works fine with the non-Azure OpenAI service, I get initial connectivity to the Azure model deployment but a timeout when sending a message.
Could you please confirm if you have any proxy / firewall within your network ? If Yes, Please check if you can bypass it and then try testing again.
Also, please check if you have enabled the All networks
access under the Networking setting within your Azure OpenAI resource as shown below?
Do let me know if you have any further queries.