Hi everyone! 

I am currently facing a problem on the implementation of Click to Dial, in the context of migration from Classic to Lightning.

In our own CRM developed on the Salesforce platform (in Salesforce Classic), we give access to the Call center, which contains a link to a visualforce page. This visualforce page, calls a URL that redirects users to a phone call application from a French Operator, to call an account.

The call center allows this redirection with an icon and a link, available on the phone number of an account. In Lightning Experience version, the call center is always available to users, but no link is available. We tried to make another call center, without success.

Do you have any idea why and do you know if there is any workaround to this issue?

Thanks a lot for your help!