 This topic has 180 replies, 1 voice, and was last updated 12 years, 11 months ago by kishor.

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BjørnGuest
hello
is there a web page with the erlang formula?
What does 2,5 Erlang C tells me?koni suryaGuesthi,is there a web page with the erlang formula?
Steve CainGuestHi,
I am looking for the Erlang B formula and the theory behind it. I would be grateful if anyone who has this information to let me know.
Thanks,
Jose QuinteroGuestSteve,
The erlang B formula is well describe in the Book Digital telephony form Jhon Bellami.
Bassicaly is a poisson formula.
if you want the formula I am be able to provide it to you.
Regards
RommelGuestErlang C is a model where blocked calls are queued. This formula is traditionally used in call center environments.
2,5 Erlangs is the amount of traffic carried/offered to traffic sensitive facilities.
In order to get usable numbers you still need GoS and delay factor.
Steve CainGuestHi Jose,
I will check out the book you mention. Meanwhile if you have the formula(ae) I would be grateful if you could send it to me at: scain@lucent.com
many thanks,
Steve
betulGuestreally, I couldn’t see any web page About ERlang a,b,c formula.If you know could you please help me?
Chris WoodGuestHere are a couple of links that will give you some background to Erlang. I thought I had a copy of the formula but I can’t seem to put my hands on it right now. If I do I will post it.
http://www.teleopti.com/callcenter/wizard/about.asp
http://www.harcourt.com/dictionary/def/3/6/4/1/3641300.html
http://www.abc.net.au/science/k2/moments/s110494.htmbetulGuestRommel & Chris Wood: thank you very much.
RommelGuestOr you can use the poisson function of Excel to find blocking:
=(POISSON(,,FALSE))/(POISSON(,,TRUE))where = # of servers
= BHT load in erlangspurwadi?GuestI’m student of telecommunication enggineering looking for theory about traffic in PSTN for my thesis. Does anyone know where i can find it?
Thank you.
kawfeeGuestI have seen several addins for Excel that utilize the Erlang B model. I have downloaded and tried two different variations of the addin, and neither one seem to provide me with the answer I was looking for. Does anyone have a source for a reliable and accuarate Erlang B add in?
I need it to help calculate bandwidth when traffic and blcking are known, as well as to estimate Minutes of usage per day…
kawfee
Ruber CastroGuestCould anybody tell me the Poisson formula for traffic calculation?
Jose QuinteroGuestArun KumarGuesthi Richard Arcadi
i saw ur macro for Excel.
If u have the Excel sheet can u send me the same.
To this mail Id:daarunkumar@hotmail.comThank & Regards
Arun

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