34 CHAPTER 2: D IAL P LANCAUTION: If you operate the NBX system in Keyset Mode, routes are notapplicable.For more information, see “DestinationRoute Create” on page 112,“TimedRoute Create” page 120, and related entries under “Dial PlanConfiguration File Commands” on page 110.System FeaturesAffected by the DialPlan ConfigurationThe dial plan configuration affects several system features:■ Keyset Mode Operation Using the Dial Plan■ Hybrid Mode Operation Using the Dial Plan■ Off-Site NotificationKeyset Mode Operation Using the Dial PlanIf you map any telephone buttons that have LEDs to specific Analog LineCard ports, you enable Keyset mode in the NBX system. Instead of dialinga single digit (typically 8, 9, or 0) before placing an outside call, the userpresses a button to select an available Analog Line Card port. The userdefines the routing (that is, the selection of a destination device) bypressing the button to select the Analog Line Card port; however the NBXsystem controls the call using the dial plan.You cannot map a digital line extension in Keyset mode.The NBX system applies any Class of Service restrictions that areassociated with the user's telephone to determine whether to make acall. The system also uses any pretranslator that a device uses andperforms any required digit manipulation operations before it actuallytransmits the digits on the Analog Line Card or Digital Line Card port.Hybrid Mode Operation Using the Dial PlanIf you map telephone buttons for some telephones but not others, youenable Hybrid mode (a mixture of standard and Keyset behaviors). Thesystem provides a system-wide External Prefix setting, which allows theadministrator to establish a prefix.Off-Site NotificationThe NBX system uses off-site notification to notify users when new voicemail messages arrive. You can define notification devices and assign themin the Internal dial plan as well as through the NBX NetSet utility.
