Open AccessRationing the main parameters of the Quality of Network services
Author(s) -
Zain-aalabdain Al-namer
Publication year - 2020
Publication title -
t-comm
Language(s) - English
Resource type - Journals
eISSN - 2072-8743
pISSN - 2072-8735
DOI - 10.36724/2072-8735-2020-14-11-72-76
Subject(s) - quality of service , computer science , telephony , public switched telephone network , service (business) , telecommunications , telephone network , reliability (semiconductor) , computer network , quality (philosophy) , telecommunications service , service quality , point (geometry) , telecommunications network , service provider , the internet , business , world wide web , marketing , power (physics) , philosophy , physics , geometry , mathematics , epistemology , quantum mechanics
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.