RIM emits BBM 7 beta featuring tone of voice calls over Wi-Fi.

Research In Motion today released any beta version of its well-known BlackBerry Messenger (BBM) service that would enable users to make free voice calls over Wi-Fi having other BBM users. With BBM 7 users can see which contacts are around for a call and can make the decision directly from the app. Users will also be in a position to continue to BBM with the other user while talking to them or chat with others or use other apps as well.

One of the other big popular features of BBM 7 is it will backup the user’s profile, contacts and groups with one BlackBerry ID to enable easy transfer whenever the user shifts to a new BlackBerry smartphone. BBM 7 currently is available as a beta and it is compatible with BB OS 6 in addition to upwards though RIM says it's going to bring it to older cell phones running BB OS 5 in a future date. Users can access BBM 7 by registering for BlackBerry Beta Zone.