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Voice over IP (VoIP)

Explore the world of Voice over IP (VoIP) technology, including protocols, OSI layers, session initiation, and hardware components. Learn how VoIP works and its benefits in modern communication systems.

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Voice over IP (VoIP)

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  1. Voice over IP(VoIP) Hani Al Ruwaili 221942 - Abdulkrem Al Zhrani 232701 Prepared for Dr. Samir Ghadhban

  2. What is VoIP ? • It is the technology that allows us to have phone service over the Internet.

  3. VoIP Protocol & OSI Layers

  4. Application Layer • Soft Phone ( Skype,Net2phon ) • Audio card • Firewall OFF

  5. Presentation Layer • Codecs • PSTN – PCM (Pulse Code Modulation) • VoIP compression • Free Codecs (speex,GSM)

  6. Session Layer • Session Initiation Protocol (SIP) • Authentication • Communication type • Take care of IP addresses and ports numbers while transmitting data

  7. Transport Layer • Real Time Protocol • Monitors the quality of the data distribution and provides control information • RTP header compression saves bandwidth by compressing packet headers • Provides a separate flow from RTP for UDP transport use

  8. VoIP Hardware • Soft Phone • VoIP telephones 100~300 $ • Bandwidth • Friendly Interface (WAP) • Audio Port • PSTN interface cards • Analogue Telephone Adaptors (ATA)

  9. PSTN interface cards

  10. Analogue Telephone Adaptors (ATA)

  11. Quality of Service • Latency (Delay) • High Priority • Jitter • Jitter Buffer

  12. Conclusion • For people who adopting communications with, VoIP can save on infrastructure costs

  13. THANK YOU Questions any one ?

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