9.3 Cisco Extension Mobility Overview

This topic describes the primary characteristics and features of Cisco Unified Communications Manager Extension Mobility.

  • Allows users to log in to any phone and have their user-specific phone configurations applied to the phone
  • Makes users reachable at their personal extensions, regardless of their locations and the physical phones they use
  • Is implemented as a phone service; works within a Cisco Unified Communications Manager cluster
  • Stores user-specific phone configuration in device profiles

Cisco Extension Mobility allows users to log in to any phone and have their individual, user-specific phone configuration applied to that phone. Thus, users can be reached at their personal directory number, regardless of their location or the physical phone that they are using. Cisco Extension Mobility is implemented as a phone service and works within a Cisco Unified Communications Manager cluster.

The user-specific configuration is stored in device profiles. After successful login, the phone is reconfigured with user-specific parameters; other (device-specific) parameters remain the same. If a user is associated with multiple device profiles, the user must choose which device profile to use.

Cisco Extension Mobility: Dynamic Phone-Configuration Parameters

This section describes the parameters that are updated when a user logs in to a phone when using Cisco Extension Mobility.

Cisco Extension Mobility can apply two types of phone configuration parameters:

  • User-specific, device-level parameters:
    1. User MOH audio source
    2. Phone button template
    3. Softkey template
    4. User locale
    5. DND and privacy settings
    6. Phone service subscriptions
    7. Other
  • Complete configuration of all available phone buttons:
    1. Includes lines (directory numbers) and feature buttons such as speed dials, service URLs, Call Park, and others (depending on phone model)

There are two types of configuration parameters that are dynamically configured when Cisco Extension Mobility is used:

  • User-specific device-level parameters: These user-specific phone-configuration parameters include userMOH audio source, phone-button templates, softkey templates, user locales, DND and privacy settings, and phone service subscriptions. All these parameters are configured at the device level of an IP phone.
  • Configuration of phone buttons (including lines): Cisco Extension Mobility updates all phone buttons—not only the button types that are specified in the phone-button template but also the complete configuration of the phone buttons. This update includes all configured lines, with all the line configuration settings, speed dials, service URLs, Call Park buttons, and any other buttons that are configured in the device profile that is to be applied.

Cisco Extension Mobility: Dynamic Phone Configuration by Device Profiles

The figure illustrates how user-specific settings roam with the user when the user logs out of one phone (for example, at the home location) and then logs into any other phone at any other location within the Cisco Unified Communications Manager cluster.

As shown in the figure, the user-specific parameters (that is, some device-level parameters and all phone-button settings, including line configuration) are configured in device profiles. Based on the user ID that is entered during login, the Cisco Unified Communications Manager can apply the personal device profile of the user and can reconfigure the phone with the configuration profile of the user who logs in.

With Cisco Extension Mobility, the Cisco Unified Communications Manager is aware of the end user of a device and applies the appropriate user-specific configuration, according to a device profile that is associated with the logged-in user.