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Grade of Service Formula

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Grade of Service is often associated with call blocking. It indicates the probability that a user will experience a blocked call, where the system cannot allocate the necessary resources. Check FAQs
GoS=NLTc
GoS - Grade of Service?NL - Number of Lost Calls?Tc - Total Number of Offered Calls?

Grade of Service Example

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Here is how the Grade of Service equation looks like with Values.

Here is how the Grade of Service equation looks like with Units.

Here is how the Grade of Service equation looks like.

0.27Edit=6.985Edit25.87Edit
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HomeIcon Home » Category Engineering » Category Electronics » Category Telecommunication Switching Systems » fx Grade of Service

Grade of Service Solution

Follow our step by step solution on how to calculate Grade of Service?

FIRST Step Consider the formula
GoS=NLTc
Next Step Substitute values of Variables
∴ GoS=6.98525.87
Next Step Prepare to Evaluate
∴ GoS=6.98525.87
Next Step Evaluate
∴GoS=0.270003865481252
LAST Step Rounding Answer
∴GoS=0.27

Grade of Service Formula Elements

Variables
Grade of Service
Grade of Service is often associated with call blocking. It indicates the probability that a user will experience a blocked call, where the system cannot allocate the necessary resources.
Symbol: GoS
Measurement: NAUnit: Unitless
Note: Value can be positive or negative.
Formulas to find Grade of ServiceOpen Variable
Number of Lost Calls
Number of lost calls refers to the count or quantity of calls that are not successfully connected or completed due to various reasons such as network congestion, other limitations within the system.
Symbol: NL
Measurement: NAUnit: Unitless
Note: Value should be greater than 0.
Formulas to find Number of Lost CallsOpen Variable
Total Number of Offered Calls
Total number of offered calls refers to the total count of incoming calls or connection attempts that are presented to the switching system within a specific time period.
Symbol: Tc
Measurement: NAUnit: Unitless
Note: Value should be greater than 0.
Formulas to find Total Number of Offered CallsOpen Variable

Other formulas in Telecommunication Traffic System category

​Go Number of Lost Call
NL=Tc⋅GoS
​Go Total Number of Offered Calls
Tc=NLGoS
​Go Cost of Switching System
Csw=nsw⋅Cs+Cch+Cc
​Go Cost of Common Hardware
Cch=Csw-(nsw⋅Cs)-Cc

How to Evaluate Grade of Service?

Grade of Service evaluator uses Grade of Service = Number of Lost Calls/Total Number of Offered Calls to evaluate the Grade of Service, The Grade of Service formula is defined as a measure of the ability of a mobile subscriber to access a cellular system during the busiest hour. It can also be defined as the probability of a call in a circuit group being blocked or delayed for more than a specified interval. Grade of Service is denoted by GoS symbol.

How to evaluate Grade of Service using this online evaluator? To use this online evaluator for Grade of Service, enter Number of Lost Calls (NL) & Total Number of Offered Calls (Tc) and hit the calculate button.

FAQs on Grade of Service

What is the formula to find Grade of Service?
The formula of Grade of Service is expressed as Grade of Service = Number of Lost Calls/Total Number of Offered Calls. Here is an example- 0.270004 = 6.985/25.87.
How to calculate Grade of Service?
With Number of Lost Calls (NL) & Total Number of Offered Calls (Tc) we can find Grade of Service using the formula - Grade of Service = Number of Lost Calls/Total Number of Offered Calls.
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