Feature and Technical Overview

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Handoff a call from Voice over Mobile to Voice over Wi-Fi

  1. A BlackBerry Mobile Voice System user has a BlackBerry device that is configured to use Wi-Fi as the default network and to use the mobile network when the Wi-Fi network is unavailable.
  2. In an area with no Wi-Fi coverage, the user makes a Voice over Mobile call on a BlackBerry device.
  3. The user moves into an area with Wi-Fi coverage. One of the following actions occurs:
    • If the template setting for Network handoff is set to Automatic handoff with user notification, the BlackBerry device automatically sends the request to move the Voice over Mobile call to the Wi-Fi network. The user can cancel this action.
    • If the template setting for Network handoff is set to Automatic handoff with user prompt, the BlackBerry device prompts the user to confirm the request to move the Voice over Mobile call to the Wi-Fi network. If the user confirms the request, the device moves the Voice over Mobile call to the Wi-Fi network.
  4. The device starts a call move request. The device compresses and encrypts the request, and sends it to the BlackBerry Enterprise Server over the Wi-Fi network.
  5. The BlackBerry Enterprise Server decrypts and decompresses the request and sends it to the MVS BlackBerry Enterprise Server Connector.
  6. The MVS BlackBerry Enterprise Server Connector sends the request to the MVS Session Manager.
  7. The MVS Session Manager establishes a Wi-Fi call with the device.
  8. The device answers the Wi-Fi call on behalf of the user.
  9. The MVS Session Manager instructs the PBX to change the RTP connection from the mobile network to the Wi-Fi network.
  10. The PBX switches the mobile call with the Wi-Fi call.
  11. The MVS Session Manager disconnects the mobile call, and notifies the device that the mobile call was moved. The user receives a notification that the Voice over Mobile call was moved to the Wi-Fi network.
  12. The user continues the call on the device.

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