This class can be used to access public telephone network using the Jaduka Web services API. It accesses to Jaduka API Web server with a given API user and key, and executes several types of operations like: - Create virtual phone account - Recharge the PIN balance - Set the PIN status - Set calling plan by PIN - Get rates and virtual phone account summaries - Set virtual phone account options - Set forwarding number - Set simultaneous calls by pin - Start a Web call or call back - Get Web call status - Get call records