American Journal of Networks and Communications
Volume 4, Issue 4, August 2015, Pages: 85-89
Received: May 29, 2015;
Accepted: Jun. 27, 2015;
Published: Jul. 8, 2015
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Binyam Shiferaw Heyi, Department of Computer Engineering, Addis Ababa Science and Technology University (AASTU), Addis Ababa, Ethiopia
VoIP refers to a method of transmission of voice data over IP networks rather than using traditional circuit PSTN (Public Switched Telephone Networks ).In this paper the researcher discusses about VoIP, about the design issues of RTP/RTCP (real-time transport/real time control protocol), how to measure packet losses at the sender and receiver side and also inter-arrival delay and delay variation (Jitter) , how the receiver and sender sends reports about the sender , how one-way end-to-end delay is measured, and explains the functionalities of static and dynamic jitter buffers and describe how Cisco routers are used to measure packet losses and round trip delays for IP-SLA (Service level agreement).
Binyam Shiferaw Heyi,
Voice over IP End-to-End Delay Measurements, American Journal of Networks and Communications.
Vol. 4, No. 4,
2015, pp. 85-89.
R. Frederick,H. Schulzrinne, V. Jacobson “ A Transport Protocol for Real-Time Applications”, RFC 3550, July 2003
Kevin Jeffa “RTCP “[online]: available at http://www.cs.unc.edu/~jeffay/courses/comp249f99/Lecture6.pdf Last Access Mar 31,2015
Omer Gurewitz srael Cidon,” One-Way Delay Estimation Using Network-Wide Measurements “ ,IEEE transactions on information theory” Vol 52 No.6 June 2006
“RTP,RTCP control protocol “ [online ]: available at http://www.networksorcery.com/enp/protocol/rtcp.htm Last Access Mar 5,2015
“Understanding delay in packet voice network “[online]: available at http://www.cisco.com/en/US/tech/tk652/tk698/technologies_white_paper09186a00800a8993.shtml Last Access Mar 16,2014
Jitter Buffer [online ]:available at http://www.voiptroubleshooter.com/indepth /jittersources.html Last Access April 4,2015
Etomic,[online]: available at http://www.etomic.org/index.php Last Access April 17,2015
Sok-hyun jung,” One- way delay measurement,”[online]: available at www.apan.net/meetings/fukuoka03/.../measurement/korea-SHJ.PPT , 2003 last access April 20,2015
Neville Brownlee,Chris Loosley :”Fundamental of internet measurement” CMG Journal of Computer Resource Management, Issue 102, Spring 2001
Cisco white paper:” Cisco IOS IP service level Agreement”,[online] available at http://www.cisco.com Last Access Apr 22,2015
R. G. Cole and J. H. Rosenbluth. 2001. Voice over IP performance monitoring. SIGCOMM Comput. Commun. Rev., Vol. 31, No. 2, April 2001, pp. 9-24.
Karam, M.J.; Tobagi, F.A., "Analysis of the delay and jitter of voice traffic over the Internet," INFOCOM 2001. Twentieth Annual Joint Conference of the IEEE Computer and Communications Societies. Proceedings. IEEE , vol.2, pp.824-833, 2001
ČÁKY et al., End-To-End VOIP Quality Measurement, Acta Electrotechnica et Informatica, Vol. 6, No. 1, 2006, pp.1-5.
Makoto Aoki et al., Measurement Scheme for One-Way Delay Variation with Detection and Removal of Clock Skew, ETRI Journal, Volume 32, Number 6, 2010, pp. 854-862
Ngamwongwattana and Thompson, Measuring One-Way Delay of VoIP Packets Without Clock Synchronization, Proceedings of International Instrumentation and Measurement Technology Conference, Singapore, 5-7 May 2009.
H. Xie and Y. Yang, A Measurement based Study of the Skype Peer-to-Peer VoIP Performance, Prceedings of the 6th International Workshop on Peer-to-Peer Systems, USA, Feb. 2007.
B. Sat and B. Wah. 2007, Playout scheduling and loss-concealments in voip for optimizing conversational voice communication quality. In Proceedings of the 15th international conference on Multimedia (MULTIMEDIA '07),ACM , NY, USA, pp. 137-146.