Jaduka API Class: Access a public telephone network with Jaduka API

This class can be used to access a public telephone network using the Jaduka Web services API.

It accesses the 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