The following is a list of requirements that you need for the EMU feature:

• QSIG must be the private networking protocol in the network of Communication Manager systems. This requirement also includes QSIG MWI

  Note:

  All systems in a QSIG network must be upgraded to Communication Manager 4.0 or later in order for the Enterprise Mobility User feature to function properly. If only some systems are upgraded, and their extensions expanded, the EMU feature might not work with the systems that have not been upgraded. Go to the Avaya Support website at http://support.avaya.com for more information.

• Communication Manager Release 3.1 or later software must be running on the home server and all visited servers.

• All servers must be on a Linux platform.

• The visited telephone must be the same model type as the primary telephone to enable a optimal transfer of the image of the primary telephone. If the visited telephone is not the same model type, only the call appearance (call-appr) buttons and the message waiting light are transferred.

• All endpoints must be terminals capable of paperless button label display.

• Uniform Dial Plan (UDP)

• To activate the EMU feature, a user enters the EMU activation feature access code (FAC), the extension number of their primary telephone, and the security code of the primary telephone on the dial pad of a visited telephone. The visited server sends the extension number, the security code, and the set type of the visited telephone to the home server. When the home server receives the information, it:

  • Checks the class of service (COS) for the primary telephone to see if it has PSA permission

  • Compares the security code with the security code on the Station screen for the primary telephone

  • Compares the station type of the visited telephone to the station type of the primary telephone. If both the visited telephone and the primary telephone are of the same type, the home server sends the applicable button appearances to the visited server. If a previous registration exists on the primary telephone, the new registration is accepted and the old registration is deactivated

  If the registration is successful, the visited telephone assumes the primary telephone’s extension number and some specific administered button types. The display on the primary telephone shows Visited Registration Active: <Extension>: The extension number that displays is the extension number of the visited telephone