Unified CME Supported Firmware, Platforms, Memory ...
Sep 15, 2016· Interoperability between Cisco Unified CME and Cisco CRS with Cisco Unified CCX is supported as of Cisco IOS Release (11)XW2. To determine supported product version combinations for Cisco Unified CCX and Cisco Unified CME, sorted by the Cisco Unified CCX version, see the Cisco Unified Contact Center Express SW and HW Compatibility Guide .