Voice over IP (VoIP) Hani Al Ruwaili 221942 - Abdulkrem Al Zhrani 232701 Prepared for Dr. Samir...
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Transcript of Voice over IP (VoIP) Hani Al Ruwaili 221942 - Abdulkrem Al Zhrani 232701 Prepared for Dr. Samir...
Voice over IPVoice over IP(VoIP)(VoIP)
Hani Al Ruwaili 221942 - Abdulkrem Al Zhrani 232701Hani Al Ruwaili 221942 - Abdulkrem Al Zhrani 232701
Prepared forPrepared forDr. Samir Ghadhban
What is VoIP ?What is VoIP ?
It is the technology that allows us to have phone service over the Internet.
Application LayerApplication Layer
Soft Phone ( Skype,Net2phon )Soft Phone ( Skype,Net2phon ) Audio cardAudio card Firewall OFFFirewall OFF
Presentation LayerPresentation Layer
CodecsCodecs• PSTN – PCM (Pulse Code Modulation)PSTN – PCM (Pulse Code Modulation)• VoIP compressionVoIP compression• Free Codecs (speex,GSM)Free Codecs (speex,GSM)
Session LayerSession Layer
Session Initiation Protocol (SIP)• Authentication• Communication type• Take care of IP addresses and ports
numbers while transmitting data
Transport LayerTransport Layer Real Time ProtocolReal 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 HardwareVoIP Hardware
Soft PhoneSoft Phone VoIP telephones 100~300 $VoIP telephones 100~300 $
• BandwidthBandwidth• Friendly Interface (WAP)Friendly Interface (WAP)• Audio PortAudio Port
PSTN interface cardsPSTN interface cards Analogue Telephone Adaptors (ATA)Analogue Telephone Adaptors (ATA)
Quality of ServiceQuality of Service
Latency Latency ((DelayDelay))• High PriorityHigh Priority
JitterJitter• Jitter BufferJitter Buffer
ConclusionConclusion
For people who adopting For people who adopting communications with, VoIP can save communications with, VoIP can save on infrastructure costson infrastructure costs