Backward compatibility

Web Call Server 5 supports backward compatibility with Web Call Server 3. It means that WCS3 client will work with WCS5 server without any changes on client side.

The only restriction is that WCS REST API and WCS JavaScript API 2.0 is not supported for WCS3 client. Thus, WCS3 client works with WCS5 server via old API. It makes possible to connect your existing applications based on WCS3 client to WCS5.

Along with legacy applications you can develop new applications based on WCS JavaScript API 2.0, and it's highly recommended.