Can someone help me? For a project of mine I need SIP Proxy hostname to be resolved via DNS. Is this possible as I cannot find this information in the documentation? Thank you in advance for your help!

I have to admit that I'm somewhat of SIP and VoIP expert, and I don't understand your question. Can you please elaborate and give some context?

Great! The telecom provider that I am working with has requirements that need to me met to provide me with SIP number. As far as I am concerned Proxy hostname is typically resolved via DNS but I cannot find any information to confirm that in the documentation. This is one of the requirements they have to ensure secure connection. I don't have any additional information from them just that SIP Proxy hostname must be resolved via DNS. If these details are still insouciant I can ask the telecom company to provide more information on this.

You can find the details about SIP over here

I've had a conversation with @Kostadin - and he showed me their carrier requirements. I have to admit, those are some "crazy" requirements, I've never seen a carrier require something like that. In any case, I've provided him with some additional information about questions to ask, so maybe we'll have a clearer picture in a bit more time.

Sounds, good.