Continuing this post: https://www.3cx.com/community/threads/cti-for-mac.39127/ If you want CTI for Mac (I tested snom and yealink, but many other phones are supported), look at dialectic dialer. Works from browser (safari plugin) and also with any "tel:" link in any browser and supports the mac address book. Can also be used to notify you on an incoming call including reverse search using the mac Addressbook. It needs manual configuration on every client, so, nothing for a rollout with 100phones, but works reliable for a set of a few Macs. IMO much better integrated in Macos then the 3CX Browser interface.