期刊名称：International Journal of Advanced Research In Computer Science and Software Engineering
印刷版ISSN：2277-6451
电子版ISSN：2277-128X
出版年度：2012
卷号：2
期号：12
出版社：S.S. Mishra
摘要：Grade of Service (GOS) is a measure of the success a subscriber is expected to have in accessing a network to complete a call. The grade of service is usually expressed as percentage of calls attempted by the subscriber during the busy-hour that are blocked due to insufficient network resources. The probability of a call's being blocked or delayed more than a specified interval, expressed as a decimal fraction, Grade of service may be applied to the busy hour or to some other specified period or set of traffic conditions. Grade of service may be viewed independently from the perspective of incoming versus outgoing calls, and is not necessarily equal in each direction. In telephony, the quality of service for which a circuit is designed or conditioned to provide, e.g., voice grade or program grade. Criteria for different grades of service may include equalization for amplitude over a specified band of frequencies, or in the case of digital data transported via analog circuits.
关键词：Grade of Service; Quality of Service; Network resources; Broadband network
