Process flow: Making a call from a mobile phone


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

  1. A BlackBerry® Mobile Voice System user calls the mobile access number from a mobile phone.
  2. The mobile phone sends the call to the PBX over the PSTN.
  3. The PBX sends the call to the media gateway.
  4. The media gateway converts the call to a SIP call, and sends the call to the BlackBerry MVS Session Manager.
  5. The BlackBerry MVS Session Manager sends the SIP call to the BlackBerry MVS Call Processor over a UDP port number or TCP connection.
  6. The BlackBerry MVS Call Processor checks the database and verifies that the DNIS number is the mobile access number. The BlackBerry MVS Call Processor verifies that the ANI is from a phone number that is associated to a registered user. The BlackBerry MVS Call Processor sends a jingle and dial tone to the user's mobile phone.
  7. The user dials an extension within the organization and presses the number sign (#) key on the mobile phone.
  8. The mobile phone sends the call to the PBX over the PSTN.
  9. The PBX sends the call to the media gateway.
  10. The media gateway converts the call to a SIP call, and sends the SIP call to the BlackBerry MVS Server over the LAN.
  11. The BlackBerry MVS Session Manager sends the SIP call to the BlackBerry MVS Call Processor.
  12. The BlackBerry MVS Call Processor creates another SIP call to dial the destination extension number. The BlackBerry MVS Call Processor sends the SIP call to the BlackBerry MVS Session Manager.
  13. The BlackBerry MVS Session Manager sends the SIP call to the media gateway over the LAN.
  14. The media gateway converts the SIP call to ISDN, and sends the call to the PBX.
  15. The PBX sends the call to the destination extension number.
  16. The recipient answers the call and voice communication can occur.

Index


Was this information helpful? Send us your comments.