There are several code sample available to test the Rtcc solution. They are also intented to provide you simple code that shows how to use Rtcc SDKs.
Code samples require to have a backend function to be able to fetch a token for the Rtcc Cloud. All samples are requsting a token from an url : authUrl/gettoken?uid="yourUid". As the backend part strongly depends on the technology you want to use, you should develop it using the code sample and explanations given in the How-To Authenticate