What do you mean by following? a.) Erlangs b.) GoS

What do you mean by following? a.) Erlangs b.) GoS

a.) Erlangs

1) Total traffic volume per hour / 3600 seconds is described by erlang
2) For example, 60 calls in one hour and each lasting 5 minutes results the following:

- Minutes of traffic in an hour = Number of calls x Duration
- Minutes of traffic in an hour = 60 x 5 = 300 minutes
- Hours of traffic in the hour = 300 / 60 = 5 hrs
- The traffic figure = 5 erlangs

b.) GoS

- Grade of Service is a probability of a cell in a circuit group which is blocked / delayed for more than a specified interval
- GoS is expressed as a vulgar fraction / decimal fraction
- It is with reference to the busy hour at the time of greatest intensity of the traffic
- GoS may be viewed independently from the perspective of incoming vs outgoing calls
- The GoS is not essentially equal between source to destination pairs.