Research In Motion Limited announced support for Cisco Unified CallManager 5.0 with the BlackBerry Wireless LAN solution to provide on-campus mobile users with IP telephony capabilities. Cisco and RIM have completed interoperability testing between the BlackBerry 7270 handsets and Cisco Unified CallManager 5.0 via SIP (Session Initiation Protocol). Together, BlackBerry Enterprise Server and the Blackberry 7270 can provide IT departments and users with an on-campus solution that delivers the same proven security, manageability, productivity and usability benefits that made BlackBerry the wireless platform of choice for millions of enterprise customers. In addition to supporting wireless email, messaging, organizer, Internet and intranet applications, the BlackBerry WLAN solution also provides Voice over Internet Protocol telephony capabilities to BlackBerry 7270 handsets through SIP, allowing users to receive and make calls anywhere the enterprise provides IEEE 802.11 wireless LAN coverage.