no i am not 100% sure.. because i give up with the old intercom device... i have now another, which may have different functionality
This is a general flow chart.. i have no idea how you want to transfer realtime audio without sip because this is how hikvision does it. but maybe i am wrong ... try it
there are many intercom implementation threads on home assistant page... everyone is just talking about sip for audio...
but it would be fine to have an implementation without sip and hikconnect...
so lets go