VoIP service provider JAJAH today announced today the one billionth call connection on the JAJAH platform was made. That call was made using Yahoo’s Voice service, which is powered by JAJAH. According to JAJAH, the service has attracted 25 million users since its launch, and every user has on average made 40 calls through the company’s IP telephony platform if we use back-of-the-envelope calculations. By comparison, rival Skype boasts over 405 million registered users globally and in a recent press release claimed people have made more than 100 billion minutes worth of free Skype-to-Skype calls alone.