It may not be new, but I must admit I hadn't heard of this before:

In essence, this is Sametime Web Conferencing with a new pricing model along with an optional adaptor that gets installed on top of a Sametime 6.5.1 Web Conferencing server. As for the audio adaptor, which is a free download, it's a rather simple one-time install on the server, at which point users will have a new 'tool' available to be used in emeetings. Simply put, this new tool is the phone. That is to say, when a meeting is created with the "Use Audio Conference" selected from the Tools tab on the meeting reservation page, the adaptor on the server connects to Premiere Conferencing to provide the conference call service for the meeting.