Firefox browser extension to open "tel"-links with a «CSTA over HTTP» compatible phone.
Go to about:addons in firefox, click on this extension and choose the "settings" tab. Set IP-Address, username and password of your CSTA-compatible phone. Now, if you click on a tel-Link on any website, it will call the number with your phone.
In the menu bar, you'll have a phone icon; when you click it, a page is openend on which you can see the status of your phone and where you can enter a number to call.
- Snom® 710