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Making a Voice over Wi-Fi call from a BlackBerry device to an internal number

  1. A BlackBerry Mobile Voice System user connects to an organization's Wi-Fi network and authenticates with the BlackBerry MVS. The BlackBerry MVS user makes a call from a BlackBerry device to an extension number within the organization.
  2. The BlackBerry MVS Client creates a call establishment request, which includes the destination number. The device compresses and encrypts the call establishment request, and sends it to the BlackBerry Enterprise Server over the Wi-Fi network.
  3. The BlackBerry Enterprise Server decrypts and decompresses the call establishment request, and sends it to the MVS BlackBerry Enterprise Server Connector over a TCP connection.
  4. The MVS BlackBerry Enterprise Server Connector sends the request to the MVS Session Manager.
  5. The MVS Session Manager sends the request using SIP to the PBX over a UDP port.
  6. The PBX determines that the extension number is internal to the organization and rings the extension number over the organization's LAN.
  7. The recipient answers the call at a desk phone and voice communication occurs over an RTP connection that the PBX opens between the two endpoints.

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