Research In Motion announced it has acquired Ascendent Systems, a leading provider of solutions that simplify voice mobility implementations in the enterprise. Ascendent, a member of the BlackBerry ISV Alliance Program, makes the Ascendent Voice Mobility Suite, a standards-based software solution that augments existing PBX (Private Branch Exchange) and IP-PBX (Internet Protocol Private Branch Exchange) systems and supports heterogeneous telephony environments to “push” voice calls and extend corporate desk phone functionality to mobile users on their wireless handset or any wireline phone. Ascendent will become a wholly-owned subsidiary of RIM. Terms of the agreement were not disclosed.