Which SIP client for Windows works as a "communication client"?

Question

Windows

Hello!
I was puzzled here, by such a thing. In Windows, there is a built-in feature to completely remove all sounds when making phone calls. But now, moreover, it is necessary for Windows to understand that a vulture client is a softphone.
Does anyone already use such a client, or maybe someone made Windows understand that the desired sip client is a softphone?

Answer 1

Skype client from 3CX (possibly).