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RATIONING THE MAIN PARAMETERS OF THE QUALITY OF NETWORK SERVICES
DOI: 10.36724/2072-8735-2020-14-11-72-76
Zain-aalabdain Al-namer, Moscow Technical University of Communication and Informatics, Moscow, Russia, zainalnamer29@gmail.com
Abstract
The European Telecommunications Standards Institute (ETSI) recommends that IP-telephony networks be divided into four classes according to the quality of service (quality of network services) QoS, the main indicator of which is packet delay (Y.1541). ITU-T Recommendation G.114 for public switched telephone networks provides delays close to ETSI gradations that correspond to different types of communication. The quality of the service from the user’s point of view can be expressed by a set of indicators. These metrics are described in terms that are understandable to both the user and the service, and are independent of the network structure. Quality of service indicators are focused primarily on the effect perceived by the user, must be guaranteed to the user by the service and be objectively measured at the point of access to the service (ITU-T Recommendation I.350). ITU-T Recommendation E.862 provides possible approaches to accounting for the economic losses of the operator (in planning, design, operation and telecommunication network) and the user associated with technical failures. Operators of networks, working in market conditions, are interested in assessing possible losses due to failures and in comparing them with the costs of increasing the reliability of their funds.
Keywords: Quality of Service, Communication, Latency, Jitter, Packet loss, Voice over IP technology, Packet-switched network, High Definition Television.
References
- Goldstein B.S., Sokolov N.A., Yanovsky G.G. Communication networks: SPb.: BHV-Petersburg, 2010. 400 p.
- Deart V.Yu. Multiservice communication networks. Session management protocols and systems (Softswitch / IMS). Moscow: Bris-M. 2011. 198 p.
- Stepanov S.N. Fundamentals of teletraffic of multiservice networks. Moscow: Eco-Trends, 2010. 392 p.
- TravisRussel, “The IP Multimedia Subsystem (IMS) Session Control and Other Network Operations”, McGraw Hill communication, 2007.
- Samuilov K.E., Sopin E.S., Chukarin A.V. Evaluation of characteristics of signaling traffic in a communication network based on the IMS subsystem. T-Comm. No. 7/2010.
- Ibragimov B.G., Ismaylova S.R. On one approach to assessing the quality of the signaling network link. All-Russian STC on «Information and telecommunication technologies and mathematical modeling of high-tech systems.» Section «Theory of Teletraffic». RUDN, Moscow, 2012.