There is a commercial offering available
Actually, if you're going to say there's nothing available, you should at least be specific enough to state that there's no consumer offering available.
MVS allows enterprises to do this:
//na.blackberry.com/eng/services/blackberry_mvs/?CPID=EMC-BBCNQ307-4&cp=EMC-BBCNQ307-4]BlackBerry - Mobile PDA - BlackBerry Communications - BlackBerry Mobile Voice System
I think we'll be waiting for someone in the open source community to write us a SIP client that will integrate with an IP PBX (for SMB and home use that is).
And, yes, the carriers are (obviously) more than a little protective about their voice minutes.
|