Electronics private automatic branch exchange

6,455 views

Published on

Electronics private automatic branch exchange

  1. 1. EPABX (ELECTRONICS PRIVATE AUTOMATIC BRANCH EXCHANGE)
  2. 2. CONTENTS INTRODUCTION ADVANCEMENTS IN PBX CENTREX SERVICES TYPES OF EPABX VOIP PSTN & ISDN CALL BIILING SOFTWARE CALL LOGGING CALL SIGNALLING ADVANTAGES DISADVANTAGES APPLICATIONS
  3. 3. WHAT IS EPABX & WHY IT IS NEEDED? A Switching system Knowledge of traffic pattern Efficient in offices
  4. 4. ADVANCEMENTS IN PBX Auto conferencing Automatic redialing of numbers Call transferring & call forwarding Auto attendant Inbuilt paging
  5. 5. CENTREX SERVICES EPSCS facility Trunk level interconnection
  6. 6. PBX TIE TRUNK HIERARCHY Interconnection through switches HU
  7. 7. SATELLITE TIE TRUNKS Used in campus HDLC protocol
  8. 8. IMPLEMENTATION OF EPABX Multiple line extensions
  9. 9. TYPES OF EPABX SYSTEMS Analog PBX Digital PBX
  10. 10. IP EPABX Network card interface Multiple simultaneous calls VOIP tech.
  11. 11. HYBRID EPABX Digital PBX with IP PBX capabilities Without network chip Service provider: Toshiba, Inter-Tel & Mitel Without network chip
  12. 12. HYBRID EPABX
  13. 13. DIGITAL EPABX Call & Auto trunkattendant budgeting CLI based Least call routing routing
  14. 14. DIGITAL EPABX
  15. 15. ANALOG EPABX Auto fax detection BackupRestricted Call billing& denied & call dialing budgeting Remote DID paging
  16. 16. IP PBX Single network for voice & data. Interactive Reduction in voice expenses response. Function: workConferencing as a software system Control of live calls
  17. 17. IP PBX Features: Unlimited extensions Unlimited auto attendants
  18. 18. VOIP Voice communication ProtocolsSDP used:RTI H.323 SIP MGCP
  19. 19. VOIP
  20. 20. PSTN & MOBILE N/W PROVIDERS IP backhaul Corporate use
  21. 21. HISTORICAL MILESTONES 1974: IEEE published a paper 1985: creation of NSFNET. 1994: invention of VOIP 1995: Standardization for VOIP 1996: Voice comm. 1993: First soft switch 1999: Open source PBX 2004: VOIP service providers proliferate.
  22. 22. PSTN Consists of Fiber optic cables , telephone lines etc. Single address space Single numbering plan
  23. 23. ISDN Simultaneous digital transmission Integration
  24. 24. CALL BILLING SOFTWARE User wise rights declaration Party maintenance Extension details Security Scanned registration forms Shifting Reprocess calls
  25. 25. AREA WISE CALL DETAIL
  26. 26. CALL ACCOUNTING SYSTEM Records events Detection of calls Call logging
  27. 27. WORKING OF CALL ACCOUNTING Collects data Attachment of revenues Sends information Storage of data Collection of voice data
  28. 28. CALL LOGGING Collection of phone call data CDR data To generate geographical reports
  29. 29. CALL SIGNALLING To set up a connection Authentication Minimization of risks
  30. 30. ADVANTAGES OF EPABX Cost reduction Predetermination of calls Software accomplishment Portability Flexibility
  31. 31. DISADVANTAGES OF EPABX Needs electric power Low installation & configuration Increase in long distance charges Low mobile workforce
  32. 32. APPLICATIONS Call center Computer support center IT response center Technical support center Information center Resource center
  33. 33. FUTURE SCOPE Include VOIP PBX Additional features
  34. 34. CONCLUSION A modern PBX from the equipment point of view , is much simpler then the older electromechanical systems . Most of its sophistication is built inside the chips that actually carry outside the work. The switching matrix tends to be quite small ,& new opportunities are available for convenient design of user terminals. Trunk circuits, going mostly to obsolete (2-wire analog) central offices and to analog long-haul tie-trunks, still have to meet the outside world on its own terms, but even they, while they are still with us, take advantage of PBX control and component sophistication. Fortunately, new standards may soon let us leave the analog world behind.

×