Hi Marden. It turns out this is not something the RingCentral softphones can do at this time. However, that could be a really useful feature!
If this feature is important to the way you want to use your RingCentral
account, I highly recommend making an idea post on this community site.
If other RingCentral users also like this idea, they can vote on it.
This is where many new features for our services can start out. We do
have a helpful walkthrough page for submitting a new idea in the RingCentral community.