April 29 - 12:15pm EDT   On Tuesday, AOL introduced Open Voice Application Programming Interfaces (APIs) that could bring mainstream VoIP a step closer to cell phone use. The APIs would endow third-party developers and VoIP device makers with open standards that would in turn allow them to integrate AOL Instant Messenger's Call Out service into softphones, SIP-enabled hardware and even Wi-Fi enabled cell phones. This would allow cell phone users to make low-cost voice calls via AIM's Call Out service, which would relay them via the Internet instead of the traditional phone network. [full story]