A measure of the quality of service provided by a telephone system. It is calculated based on the probability that a call will encounter a busy signal during the busiest hour of the day.
Commonly known as Service Level, these parameters allow the performance of the Contact Center to be quantified, in terms of calls answered within a pre-specified period of time.
Defined in ITU-T Rec E.600, Ref ITU-T blue book, volume 1 fascicle1.3: A number of traffic engineering variables used to provide a measure of adequacy of a Group of Resources under specified condition; these Grade of Service variables maybe the probability of loss, dial tone delay,etc. Note 1 - The parameter values assigned as objectives for Grade of Service variables are Called grade of service standards. Note 2 - The values of grade of service parameters achieved under actual conditions are Called grade of service results. For use in P308 is proposed: GOS is a set of measures characterising the degree of traffic impairment as perceived by the users. To the extent it can be measured, such measurements must be done on the user level (and therefore at the user access points). GOS is related to Network Performance .In fact, the network performance requirements are specified with the objective of making the public network contribute to a satisfactory GOS (as perceived by the users). source: ITU-T E.600,EU-P308 domain: Performance acronyms: GOS usage: EU-P308
(1) A measurement of the quality of telecommunications related to the availability of circuits when calls are to be made. Grade of service is based on the busiest hour of the day. It is measured in either percentage of calls blocked for dial-up access or average delay for manual situations. (2) The probability of a call being blocked by busy trunks; expressed as a decimal fraction. It usually pertains to the busy-hour probability. Referred to as the "P" factor.
The definition of service on telecommunications transmission facilities. Grade of service is typically defined as a "P" factor - the probability of encountering a busy signal on a trunk or group of trunks. For example, a P01 grade of service means that one percent of calls will encounter a busy signal. .
This is a target set for call answering times, such as: 80 percent of calls answered in 20 seconds. Grade of service is the same as service level.
A measurement of the quality of communications service in terms of the availability of circuits when calls are to be made. Grade of service is based on the busiest hour of the day and is measured as either the percentage of calls blocked in dial access situations, or average delay in manual situations.
The probability that a call will not be connected to a system because all trunks are busy. This is often expressed as "p.01" which means 1% of calls will not be answered.
A grade of service is the probability (P) expressed as decimal fraction of a telephone call being blocked by busy lines. For example, P.01 is the grade of service reflecting the probability that one call out on one hundred calls will be uncompleted (or busy).
GOS is an estimate of customer satisfaction with a particular aspect of service such as noise, echo or blocking. For example the noise grade of service is said to be 95% if, for a specified distribution of noise, 95% of the people judge the service to be good or better. In traffic networks, GOS defines the percentage of calls that receive no service (blocking) or poor service (long delays). GOS measures apply to all aspects of telecommunications networks. In many cases the literature equates GOS only with the probability of a blocked call. When used without further explanation, GOS generally refers to blocking probability.
The probability that a call will not be connected to a system because all trunks are busy. Grade of service is often expressed as "p.01" meaning 1% of calls will be "blocked." Sometimes, grade of service is used interchangeably with service level, but the two terms have different meanings. See Service Level.
A measure of what percentage of calls placed through an exchange fail to be completed due to congestion of that exchange. Half-rate A variant on GSM; doubles capacity by more efficient coding using speech compression.
Measure of telephone service quality based on the probability that a call will encounter a busy signal during the busiest hours of the day.
In telecommunication, and in particular teletraffic engineering, the quality of voice service is specified by two measures: the grade of service (GoS) and the quality of service (QoS).