The Cisco Unity Express network module is fully self-contained, with dedicated onboard processing, memory, and storage, allowing efficient message management, a range of concurrent sessions including optional IVR, simultaneous processing, and ample voicemail storage capacity for a wide range of typical office profiles. Release 3.0 adds support for the newer network module with optional IVR (part number NME-CUE) hardware, allowing up to 24 ports for use by integrated messaging, voicemail, and automated attendant functions or optional IVR sessions.