Comrades engineers, help me figure it out. The UCWA website has official examples for downloading and connecting to the Skype Web SDK via HTML / JS scripts, and a link to an article on using examples localhost only . A separate item is Configure a Web Server such as IIS on your local machine to serve the files . Based on this, I realized that Microsoft Lync Server 2013 is required for use, in which you need to register a domain with hosted scripts to connect to the Web SDK. At the moment, when trying to log in to domain / token, the Chrome browser is trying to send requests: https://lyncdiscoverinternal.metio.net/xframe to the answer net::ERR_NAME_NOT_RESOLVED ; https://lyncdiscover.metio.net/xframe in response 403 (Forbidden) . After I get the error text:
Service does not allow a cross domain request from this origin. Autodiscovery failed on internal/external location 
