There are two models of messaging unification to be considered when integrating Avaya and IBM communication products to provide Unified Communications:
• Unified Access
• Unified Message Store The Unified Access approach allows IBM Lotus Notes to access e-mail messages from IBM Lotus Domino Server as well as voice and fax messages from the Avaya Modular Messaging Message Storage Server. Avaya provides add-ins for IBM Lotus Notes. These add-ins work with either Avaya Modular Messaging Message Storage Server or IBM Lotus Domino. Users can also access Subscriber Options directly on the PC or as a Web-based application to administer their mailboxes. In this method, the telephone user interface (TUI) does not provide e-mail reading for messages store in Lotus Domino. Mobile users can access both e-mail and voice messages via speech commands using Avaya one-X Speech. The Unified Message Store approach allows Lotus Notes to access e-mail, voice mail and fax messages, and IBM Lotus Domino is used for storage. With a Unified Message Store, the TUI provides Dual Tone Multi-Frequency (DTMF) access to all messages stored in the user's inbox on the message store. This method means that the TUI or one-X Speech can provide access to voice mail along with e-mail reading (via text-to-speech technology) of messages stored in the corporate e-mail system. Enterprises that opt for the Unified Message Store approach realize the savings that can accrue from having a single messaging architecture. A Unified Message Store reduces IT expense by establishing a single solution to operate and maintain directories, message store, back-up procedures, administration, and servers. In addition, a single, unified message store solution leverages the investment, operations, and business practices associated with IBM Lotus Domino. Avaya one-X™ Speech (formerly known as Unified Communication Center) can be used to access all messages types regardless of whether voice, fax, and email messages are maintained in one or multiple message stores. In addition to reading email messages, users can have the system read some email attachments. Ideal for mobile users, one-X Speech provides eyes-free, hands-free, and speaker-independent access to messages, calling and conferencing, calendar, tasks, and reminders. one-X Speech creates a virtual desktop environment that allows users to shift back and forth between their applications to manage their interrelated activities as a single work flow. Concatenated speech commands make using the system as natural as speech. | 
