The mean delay – Describes the average time a user spends waiting for a connection if their call is delayed. The mean delay – Describes the average time a user spends waiting for a connection whether or not their call is delayed. The probability that a user may be delayed longer than time t while waiting for a connection. Time t is chosen by the telecommunications service provider so that they can measure whether their services conform to a set Grade of Service. Where and when is Grade of Service measured? The Grade of Service can be measured using different sections of a network. When a call is routed from one end to another, it will pass through several exchanges. If the Grade of Service is calculated based on the number of calls rejected by the final circuit group, then the Grade of Service is determined by the final circuit group blocking criteria. If the Grade of Service is calculated based on the number of rejected calls between exchanges, then the Grade of Service is determined by the exchange-to-exchange blocking criteria.
The mean delay – Describes the average time a user spends waiting for a connection if their call is delayed The mean delay – Describes the average time a user spends waiting for a connection whether or not their call is delayed The probability that a user may be delayed longer than time t while waiting for a connection Time t is chosen by the telecommunications service provider so that they can measure whether their services conform to a set Grade of Service Where and when is Grade of Service measured The Grade of Service can be measured using different sections of a network When a call is routed from one end to another it will pass through several exchanges If the Grade of Service is calculated based on the number of calls rejected by the final circuit group then the Grade of Service is determined by the final circuit group blocking criteria If the Grade of Service is calculated based on the number of rejected calls between exchanges then the Grade of Service is determined by the exchange-to-exchange blocking criteria