RIM (think “Blackberry and Research in Motion“) announces this week its Mobile Voice System 5 and a new device, the Blackberry Pearl 9100. The MVC 5 makes VoIP calling over WiFi for small business users more a reality than ever. Listen to a podcast and video of an example of a company already leveraging (for the past 3 years) RIM, IP PBX, and domestic/international direct inward dialing on iTunes #69 and Youtube.

The Mobile Voice System 5  works with Cisco’s Unified Communications Manager. It can find the location of a Blackberry that is connected via WiFi to an actual desktop phone number. As a result, users can send and receive calls like they are back in the office.

In February 2009, Omar Chohan of SACS stated, “The way we’ve been doing this for the past few years or so … Calls are routed via SIP into our PBX for example in our USA or Dubai office or while we are out anywhere just holding our Blackberry cell phone. They are provisioned as Blackberry calls One Number Reach. In addition, the MVS offering enables DID to be used as a mask for inbound and outbound calls. The caller ID will not be the Blackberry number but instead the DID from DIDX.”

These solutions that have been around long before this recent Blackberry announcement, as Chohan shows, enables individuals and organizations the opportunity to record calls, forward calls, block calls, call hunt and other things that the Internet-protocol based PBXs have enabled for many years.

Mobile Voice System 5, itself, will be available sometime in 2010. Meanwhile, check with your favorite vendors of IP PBX who leverage the RIM and other mobile platforms, wholesale or retail, on how to use this type of service in the future.