Process flow: Transferring a call from a BlackBerry device


This diagram shows the elements that are described in the following process flow.

  1. A BlackBerry® Mobile Voice System user dials the extension of Party B to transfer an active call with Party A using a BlackBerry device.
  2. The BlackBerry MVS Client sends the transfer code and destination phone number of Party B to the PBX over the PSTN using DTMF codes.
  3. The PBX sends the DTMF codes to the media gateway.
  4. The media gateway converts the DTMF codes to an RTP packet, and sends the RTP packet to the BlackBerry MVS Server over the LAN.
  5. The BlackBerry MVS Call Processor recognizes the transfer code, places Party A on hold, and creates a SIP call to dial the destination phone number. The BlackBerry MVS Call Processor sends the SIP call to the BlackBerry MVS Session Manager.
  6. The BlackBerry MVS Session Manager sends the SIP call to the media gateway over the LAN.
  7. The media gateway converts the SIP call to ISDN, and sends the call to the PBX.
  8. The PBX sends the call to the destination extension number.
  9. Party B answers the call, speaks to the user, and accepts the call from Party A.
  10. The user completes the transfer on the BlackBerry device.
  11. BlackBerry MVS Server ends the call with the BlackBerry device, and Party A can now speak with Party B.

Index


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