I have set up the click to call functionality. However the number must be formatted in a certain way in SF for this to work. In SF, the number will appear 1 (123) 456-7890 When you use the click to call functionality, the following parameter DESTINATION=(123)%20456-7890 is passed into SalesforceAPI.aspx This causes the click to call to drop the call instantly. If I edit the web request and change the number formatting to 1xxxXXXXXXX, then the call completes. My 3cx is configured for 11 digits for a local call in the format 1xxxXXXXXXX (11 digits) Is there a way to configure the plugin to take different number formatting? or make formatting rules on 3cx? Thanks for any help on this.