The Cisco Unity Express network module is fully self-contained with dedicated onboard processing, memory and storage, allowing for efficient message handling, a range of concurrent sessions, simultaneous processing, and ample voice mail storage capacity for a wide range of typical branch office profiles. The NM-CUE-EC, Cisco Unity Express Network Module with Enhanced Capacity, introduced with Unity Express Release 2.1, supports up to 16 ports of concurrent voice mail or automated attendant sessions.