1. ## Erlang Help

I'm looking at the following question:

If a Network switch handles 100 requests every minute and the average request duration is 250 milliseconds, compute the traffic volume at the switch in Erlang.

I worked out this:

Erlang =

Average call duration___
Average interarrival time

100 requests per minute
= 100 X 60 = 6000 requests per hour

Average interarrival rate = 60/6000
= 0.01 minutes = average inter arrival time

How do I convert 0.01 minutes to miliseconds??

2. Originally Posted by mikebyrne
I'm looking at the following question:

If a Network switch handles 100 requests every minute and the average request duration is 250 milliseconds, compute the traffic volume at the switch in Erlang.

I worked out this:

Erlang =

Average call duration___
Average interarrival time

100 requests per minute
= 100 X 60 = 6000 requests per hour

Average interarrival rate = 60/6000
= 0.01 minutes = average inter arrival time

How do I convert 0.01 minutes to miliseconds??
Basically, you want to cancel out your other units until you are left with your desired units as such

$\displaystyle 0.01min\times\\ \frac{60sec}{1min}\times\\ \frac{1\times10^{3}ms}{1sec}=$ what you are looking for.