Voice over IP (VoIP). Hani Al Ruwaili 221942 - Abdulkrem Al Zhrani 232701. Prepared for Dr. Samir Ghadhban. What is VoIP ?. It is the technology that allows us to have phone service over the Internet. VoIP Protocol & OSI Layers. Application Layer. Soft Phone ( Skype,Net2phon ) Audio card
Voice over IP(VoIP) Hani Al Ruwaili 221942 - Abdulkrem Al Zhrani 232701 Prepared for Dr. Samir Ghadhban
What is VoIP ? • It is the technology that allows us to have phone service over the Internet.
Application Layer • Soft Phone ( Skype,Net2phon ) • Audio card • Firewall OFF
Presentation Layer • Codecs • PSTN – PCM (Pulse Code Modulation) • VoIP compression • Free Codecs (speex,GSM)
Session Layer • Session Initiation Protocol (SIP) • Authentication • Communication type • Take care of IP addresses and ports numbers while transmitting data
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
VoIP Hardware • Soft Phone • VoIP telephones 100~300 $ • Bandwidth • Friendly Interface (WAP) • Audio Port • PSTN interface cards • Analogue Telephone Adaptors (ATA)
Quality of Service • Latency (Delay) • High Priority • Jitter • Jitter Buffer
Conclusion • For people who adopting communications with, VoIP can save on infrastructure costs
THANK YOU Questions any one ?