Process flow: Making a call from a BlackBerry device (PBX initiates)

This diagram shows the components that are described in the following text.

This process flow applies to a user who makes a call from a BlackBerry® device and the PBX starts the call.

  1. A BlackBerry® Mobile Voice System user makes a call from a BlackBerry device to another extension within the user's organization.
  2. The BlackBerry MVS Client starts an outgoing call request, which includes the destination extension number.
  3. The BlackBerry device compresses and encrypts the call request, and sends it to the wireless network over port 3101.
  4. The wireless network sends the call request to the BlackBerry® Enterprise Server.
  5. The BlackBerry Enterprise Server decrypts and decompresses the call request, and sends it to the BlackBerry MVS Connection Service over the LAN using a TCP connection.
  6. The BlackBerry MVS Connection Service sends the call request to the BlackBerry MVS Call Processor over a UDP port number.
  7. The BlackBerry MVS Call Processor checks the database and verifies that the call request is from a registered user. The BlackBerry MVS Call Processor creates a message with an ANI from the pool of ANI numbers and sends the message to the BlackBerry MVS Connection Service.
  8. The BlackBerry MVS Connection Service sends the message to the BlackBerry Enterprise Server over the LAN using a TCP connection.
  9. The BlackBerry Enterprise Server compresses and encrypts the message, and sends it to the wireless network over port 3101.
  10. The wireless network sends the call request to the BlackBerry device.
  11. The BlackBerry device sends a delivery confirmation to the BlackBerry Enterprise Server.
  12. The BlackBerry Enterprise Server sends the delivery confirmation to the BlackBerry MVS Connection Service over the LAN.
  13. The BlackBerry MVS Connection Service sends the delivery confirmation to the BlackBerry MVS Call Processor over a UDP port number.
  14. The BlackBerry MVS Call Processor creates a SIP call to dial the BlackBerry device and sends the SIP call to the BlackBerry MVS Session Manager.
  15. The BlackBerry MVS Session Manager sends the SIP call to the media gateway over the LAN.
  16. The media gateway converts the SIP call to ISDN, and sends the call to the PBX.
  17. The PBX sends the call to the BlackBerry device.
  18. The BlackBerry device verifies that the ANI is the same as the ANI from the original message and sends an acknowledgment to the PBX over the PSTN using DTMF codes. The BlackBerry device plays a ring tone to the user.
  19. The PBX sends the DTMF codes to the media gateway.
  20. The media gateway converts the DTMF codes to an RTP packet, and sends the RTP packet to the BlackBerry MVS Call Processor over the LAN.
  21. The BlackBerry MVS Call Processor recognizes the acknowledgment, retrieves the destination extension number from the original call request, and creates a SIP call to dial the destination extension number. The BlackBerry MVS Call Processor sends the SIP call to the BlackBerry MVS Session Manager.
  22. The BlackBerry MVS Session Manager sends the SIP call to the media gateway over the LAN.
  23. The media gateway converts the SIP call to ISDN, and sends the call to the PBX.
  24. The PBX sends the call to the destination extension number.
  25. The recipient answers the call and voice communication can occur.

Index


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