IP PBX

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  • mixture of voice,data and video.
  • Internet connection is necessary Without power VOIP phones are uselessVoice Quality is not too goodThe nеxt disadvantage of VoIP system is due to compression аnd decompression. Compression of data consumes extra processing power аndаlѕо the sound quality gets deteriorated. Some compression algorithms also cаuse echo problems. Echoes are filtered out, but аgаіn filtering consumes еven more processing power. Of course, compressing аnd filtering data is mоre of a problem fоr computer-based VOIP thаn for VOIP phones.
  • Internet connection is necessary Without power VOIP phones are uselessVoice Quality is not too goodThe nеxt disadvantage of VoIP system is due to compression аnd decompression. Compression of data consumes extra processing power аndаlѕо the sound quality gets deteriorated. Some compression algorithms also cаuse echo problems. Echoes are filtered out, but аgаіn filtering consumes еven more processing power. Of course, compressing аnd filtering data is mоre of a problem fоr computer-based VOIP thаn for VOIP phones.
  • IP PBX

    1. 1. Presenter: Nisar Ahmed Memon Muhammad Muzzamil Shaikh Aslam Dall
    2. 2. Introduction Problems & Solution Equipment Used System Block Diagram Working Process Advantages Results Application Conclusion Future Work References
    3. 3. • • • • • • • • • • • • Build unified communications system (real and non real time) Open source software platform Elastix Server Asterisk PBX as the kernel Portability, Cost effective solution and Flexibility Integration of hardware and software Android supported handhelds with the wireless network PCs connected with both wired LAN and wireless LAN To design IP based PBX network architectures To customize efficient and effective Soft Switch To implement real time and non-real time applications Design Global network by joining small IP based PBX Integrate Analog Phone and configure these phone
    4. 4. • Higher charges of calling with respect to distance. • Dedicated line required to complete a call • Limited scalability • Separate Wiring System • Limited Mobility of users • Less Features at a Higher Price • No database
    5. 5. IP PBX Internet Protocol Private Branch Exchange
    6. 6. • • • • • • • • Voice call Video call Voice mail Voicemail to E-mail Follow me IVR Database system Easy Network Management
    7. 7. PBX IP-PBX Separate Wiring system Use LAN Higher operational cost Lower operational costs Difficult to configure Easy to configure Complex Management Simpler Management Less Features More Features Classical and No Future Future Development Uses a separate infrastructure Integrates into Data Network
    8. 8. Hardware • • • • • • PC server HTC android Analog telephone Access Point A400E+1FXO Laptop Software • • • • Elastix Wireshark 3cx phone Openfire
    9. 9. Soft Phones Analog Phone ATA Server (Elastix) IP Phone Smart Phone
    10. 10. • Customization Of server • Configuration – 3CX Soft Phone on PC – 3CX Soft Phone on android HTC – SIP Account – Voice Call – Video call – Voice mail – IVR(Interactive Voice Response)
    11. 11. • • • • • • • No Charges of calling with respect to distance. No Dedicated line required to complete a call Great Scalability No Separate Wiring System Great Mobility of users Great Features at a Zero Price Database
    12. 12. Packet Loss Analogue Phone 1 0.8 P a c k e t 0.6 0 0.4 0.2 0 18 38 42 45 58 Total Packet 77 85 88 333 %
    13. 13. Packet Loss IP Phone 1 P a c k e t 0.8 0.6 0.4 0 1% 0.2 0 6 17 22 48 52 59 69 91 107 119 148 573 Total Packet Packet Loss Softphone Mobile 1.2 P a c k e t 1 0.8 0.6 0.4 0 1% 0.2 0 3 14 23 38 39 46 80 Total Packet 85 89 92 420
    14. 14. • Education • Banks • Corporate Organization • Business Sector • Hotels • Hospitals
    15. 15. • This model can be implemented in the university campus to provide free voice and video calls. • The service is secured and allows only the registered user to place calls. • Quality of Service is not good while communicating phone to any SIP phone, Server Capacity User Capacity Bandwidth Codec
    16. 16. •Integration with PSTN Network •Integration with GSM Network •Integration with others Unified Communication Systems •Communication without side SIP network •Telephony Interface Cards •High security for large scale enterprise network
    17. 17. Van Meggelen J., Smith J., Madsen L."Asterisk: The Future of Telephony".2nd ed. O’Reilly Media, p.608,2007. Li Jian, Li Wei, Unified communication and standardization, Telecommunications Network Technology,2009,(07) Andre du Toit (1992). Private PBX Networks: Cost Effective Communication Solutions in Proc IEEE 3rd AFRICON conference [Montoro, P. and Casilari, E. (2009). A comparative study of VoIP standards with Asterisk. In Proceedings of the 4th International Conference on Digital Telecommunications, pages 1– 6, Colmar, France.

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