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calculate number sub from BHCA

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peterholl2004
Guest

can you help me!
I would like to calculate total number sub in local exchange from BHCA.
thanks

mohsin ismail
Guest

hi peter

this is my proposal of calculation:-

BHCA= A*3600/B
A=C/D
D=C/D

where
A= traffic in erlang
C= traffic in erlang per sub
D= total number of sub.
B= Mean holding time in secs.

Here you must know:-
B,C,BHCA, then you get the A. From A you will get D.

good luck.

rgds
mohsin Ismail

Mohsin Ismail
Guest

corrections:-

A=C*D

xxx
Guest

Hi Ismail

Sorry, but too many mistake in your formular:

D=C/D ?????????????????

Pls check carefully before post it.

Vijay
Guest

Hi Moshin,

I have a GSM Network with 300 K Subscribers.MHT is 100 Seconds.

How can I calculate BHCA ?

Rgds

Mohsin Ismail
Guest

hi xxx

sorry for my mistake..

Mohsin Ismail
Guest

Hi Vijay

you need Traffic in erlang/sub value. From that put in A=C*D, then compute in BHCA formula.

good luck

xxx
Guest

Hi Ismail,

Your correction still has the error. What is the formular D=C/D ?????????????????

Pls correct it

Mohsin Ismail
Guest

XXX

forget about D=C/D, the correct one is A=C*D.

Misa
Guest

Hi Vijay

Here is the calculation:

BHCA = BHT * 3600 / MHT

where
BHT = Busy Hour Traffic in Erlang
MHT = Mean Holding Time in second

BHT = NSUB * C

where
NSUB = number of subscribers
C = traffic in Erlang per subscriber

-> BHCA = NSUB * C * 3600 / MHT

Normally C = 0.025 Erl/sub

-> BHCA = 300000*0.025*3600/100
-> BHCA = 270000

Misa

Hi MISA
Guest

For this BHCA what are the routes we have to consider ?

Let me Put my list of routes.

ALL EXTERNAL PSTN
ALL BSC ROUTES
VMS ROUTES
SCP ANNOUNCEMENT ROUTE
VAS SERVICE ROUTE

Rgds

Scot

Scot
Guest

Hi MISA,

For Traffic Calculations and Engineering which routes we have to Montior ?

BSC Incoming / Outgoing.

PSTN Incoming /Outgoing.

VMS Outgoing.

What else ?

Rgds

Viewing 12 posts - 1 through 12 (of 12 total)
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