Mitel NuPoint Unified MessagingTM (UM; formerly Mitel NuPoint Messenger IP®) 640 is a highly scalable and robust messaging solution that delivers carrier-grade reliability and resiliency. It meets the scale, reliability and budget requirements of businesses of all sizes, with flexible deployment options:

Single-server solution: delivers fully redundant hardware in a single server, for cost-effective service reliability that scales to 120 ports
Multi-server solution: scales service reliability up to 960 ports with up to 4 clustered nodes

NuPoint UM 640 benefits:

Easily grows with your organization, supporting up to 100,000 mailboxes, 960 ports and 10,000 hours of storage
Leverages your investment in advanced data storage, as NuPoint UM 640 can be centralized in a data center, supports NAS integration and can deliver cross-data center disaster recovery
Increases user productivity and responsiveness with advanced unified messaging and text-to-speech email reading, allowing users to manage all forms of messages, including voicemail, email and fax, from the interface that suits them best in the moment: desk phone, mobile device, or PC
Improves customer service levels and offloads the company receptionist from routine calls with an auto-attendant
Empowers users to control how and when calls reach them with personal call routing options such as find me - follow me, and the ability to create personal auto-attendants with options such as schedules and caller id filtering
Fits with your existing infrastructure including third-party PBXs, LDAP and Active Directory®, and leading email and presence solutions.