We will soon add a new field to the extensions API; mobile.
The mobile field will contain the mobile number of the extension.

Authentication options

Examples:

A request to this endpoint with the HTTP header 'Authorization: Bearer <json.web.token>' will authenticate the request to '/calls' for the user.
A request to "/auth/login" with the HTTP header 'Authorization: Basic MDEyMzQ1Njc4OnZlcnlzZWNyZXQ=' will make the user with the username "012345678" and the password "verysecret" login, and return a cookie for future Authentication.