A Performance Evaluation of Voice Over IP Protocols (SIP and H.323) in Wireless Network

Abstract

Many types of Voice over Internet Protocol (VoIP) are used to provide audio or multimedia sessions over Internet Protocol (IP) networks, multimedia communications became very easy by using applications that provide Internet Protocol VoIP like Skype, Viber, WhatsApp, etc. And network simulation has frequently been used to determine the performance feasibility of any network protocols and the model reliability before practical implementation. Several kinds of studies were carried out on voice efficiency over different types of networks environment, among these experiments and researches, finding a better signaling protocol for communication by evaluating and analyzing the performance of the protocols, such as the most commonly used Session Initiation Protocol (SIP) and (H.323) signaling protocols. This paper provides a comparative study of the performance of the two aforementioned protocols that are most widely used over the IEEE 802.11a wireless network by using the QualNet simulator. The study was performed by analyzing the data packets for both initiator and receiver for both protocols, to evaluate the performance based on five metrics: Session total Bytes, Establishment time, Sent, total Bytes received of Real-time transport protocol (RTP), Average End to End Delay and Overall Throughput. The outcomes demonstrated SIP protocol ascendingly rise and superior over H.323 protocol as a permanently started from the Zero-point around 5.4 (Mbps) of the time until the end of the experiment close to 6.2 with a 0.05-s delay while the rival was always below these values of throughput. Hence its superior provides preferability in multimedia sessions. studying and evaluate the performance of two IPs with a high capability

Performance analysis: Securing SIP on multi-threaded/multi-core proxy server using public keys on Diffie–Hellman (DH) in single and multi-server queuing scenarios

“…Noori et al [42] analyzed the efficiency of SIP and H.323 protocols in terms of performance in IEEE 802.11e using the QualNet simulator. They used five metrics: i) total number of bytes used in a session, ii) setup time, iii) bytes sent and received by the RTP, iv) average end-to-end…”

QUALITY OF EXPERIENCE FOR VOICE OVER INTERNET PROTOCOL (VoIP)

“…For the protocols G.723 (both of the channels 5.3 and 6.3 kbps), G.728 standard (16 kbps channel) and the standard protocol G.722 (48, 56, and 64 kbps channels), G.729 (8 kbps channel) [20,21]. The H245 control protocol is only employed during the connection-establishing phase of multimedia application communication [22], when the devices' capabilities, audio encoding techniques, and appropriate media channels are discussed and agreed upon. A technique from the RTCP is used to assess the quality of the sessions and connections.…”