Unified Messaging

Cisco Unity is designed for an IP environment and complements the full range of IP communications solutions (for example, Cisco Unified CallManager, Cisco Personal Assistant, and Cisco IP Contact Center). Cisco Unity provides advanced capabilities that unify data and voice. Cisco AVVID enables Cisco Unity to provide a solid foundation to roll out future convergence-based communications services. IP is less expensive to use for a comprehensive communications solution deployment because it is a single network for both voice and data. Figure B-11 shows an example of this type of unified messaging system.

Figure B-11. Unified Messaging

Cisco Unity leverages existing communications infrastructure investments by integrating with leading legacy PBXs and interoperating with existing voice mail systems. Cisco Unity supports legacy PBX systems and Cisco Unified CallManager, paving the way for a cost-effective migration to full IP telephony. Cisco Unity has an optional Audio Messaging Interchange Specification analog (AMIS-a) networking module that allows message interchange between disparate voice messaging systems that support this industry-standard messaging protocol. Cisco Unity Bridge enables advanced message interchange functionality with Avaya and Octel voice messaging systems. With AMIS-a and Cisco Unity Bridge, customers who deploy Cisco Unity can continue to use their existing messaging systems to ensure a smooth transition.

Because Cisco Unity shares the same directory as the Microsoft Exchange network3, users can make subscriber moves, adds, and changes from one place, eliminating redundant tasks. Studies show that the average cost of a typical system move, addition, or change to a user account is between $75 and $100. Eliminating duplicate administration for separate voice and e-mail systems can quickly pay for the entire system. In addition, because all messages are housed in the same message store, backup costs are reduced.