This solution is ideal for growing companies needing 50 to 500 telephones, and for the satellite offices of large corporations that need cost effective use of the same applications available at headquarters. As sophisticated as the larger DEFINITY servers, this server provides call processing, business applications - such as, voice messaging, shared voice mail, and small call center - networking capabilities, and expert systems for remote diagnostics and self-healing.

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CSI supports basic call routing and Computer-Telephony Integration (CTI) applications, as well as sophisticated predictive routing. It also offers a selection of telephones to meet the needs of any employee. For example, multiline digital telephones provide fixed feature buttons, built-in speakerphone capabilities, optional displays, and programmable buttons and "softkeys" that allow users to customise their phone functions.

Intuity AUDIX® Messaging integration can provide voice, fax, and text messaging, along with text-to-speech and Message Manager functionality-
allowing employees and customers to communicate using the tools they prefer, anytime, anywhere. It also supports digital networking, allowing you to link locations and improve communications among employees at multiple sites.

Definity Series
Avaya Definity Server R
Avaya Definity Server SI
S8300 Media Server
S8700 Media Server


Avaya Definity 6400 Series Handsets
Avaya Definity 6400 Series Handsets