Detect numbers on page and convert them to sip with paramsExample: Phone 0123456789, use sip with params - sip:$NUMBER@YOURSIPPROVIDER?method=call
phone number on web page will replace to link - <a href="sip:$NUMBER@YOURSIPPROVIDER?method=call">0123456789</a>.
When user click on this link - will run Linphone (or other Soft Phone) and call to client with number 0123456789.
Don't forget replace sip4.w3tel.net to your sip provider (hoster).