I am wondering if it is possible to install a Yeti-Switch instance as an SBC only. I would like to have all the features of Yeti-Switch except for the rates and billing functionality.
Is this possible? If so, can you provide some instructions on how to do it?
You can create one rateplan with one destination with zero price.
That was my first option as well, but I wanted to avoid the processing that involves the database query. Does this tip internally avoid the query, or does everything follow the usual logic?
Yeti is not designed for this. But you could try sbc module from mainline SEMS GitHub - sems-server/sems: Sip Express Media Server
But mainline SEMS is not actively developing.