David Windell

Freshcaller has had this feature for years so there must be browser support for it:

https://support.freshcaller.com/en/support/solutions/articles/239556-how-to-make-an-incoming-phone-call-ring-on-both-speakers-and-headphones-

I can't share the code publicly but we (https://outeredge.agency/) might be able to offer some custom development for you on your portal.

It involves creating an API endpoint outside of Zendesk which the portal can communicate with to carry out actions that require more than end-user permission.

Using some custom Javascript in a custom HC theme we added this which calls our remote API:

We don't directly connect to the ZD API, our custom JavaScript makes a request to an externally managed endpoint which in turn updates the ticket in ZD. It's a hack, but it works.

We've had to implement this with an API hack, would be great if this could be part of the core product.