Call flow: Making a call from a BlackBerry device using Voice over Wi-Fi to an internal number

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

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