- This topic has 124 replies, 1 voice, and was last updated 1 year, 11 months ago by Althaf.
25th March 2002 at 13:57 #33330Jose QuinteroGuest
Let me know your address to send it you a File
Regards25th March 2002 at 16:58 #333315th May 2002 at 16:38 #33332Nouman MahmoodGuest
Grade of Service (or GOS) is the probability of a subscriber finding
Congestion. Congestion means that all circuits are busy and no
Switch path is available. Thus, a higher GOS means poor Service.
A GOS 0.01 means 1 out of every 100 call is lost(or rejected) due
to congestion on circuits.
X = (( Traffic in Erlangs)^ n) / n!
SIGMA Y = (( Traffic in Erlangs)^ k) / k! ; k = 0 to k=n
GOS = X / SIGMA Y
Where n = Total no. of Circuits (or channels) avaible.28th May 2002 at 18:02 #33333Adriana InfanteGuest
I work in ETB ( Empresa de Telecomunicaciones de Bogota), The biggest telecomunication company of my country, and I want to ask you, about How can I, get QOS over different tecnolo., for example, we have about 2.700.000 lines , some of those are EWSD ( Siemenes ) or AXE (Ericcson) or FETEX (Fujitsu),
Thank you for your answer!
PD. If someone can send me an excel of gos matrix to firstname.lastname@example.org
HAve a Nice day!
AIL5th June 2002 at 17:02 #33334Jose QuinteroGuest
The GOS does not depend of Technology or Manufacture. It come from other variables.
The Number of Trunks that you available, The traffic in erlang that you expect to have.
With those value you will have de GOS..
Jose Quintero2nd July 2002 at 15:47 #33335DeepaGuest
I need an erlang B and erlang c table? i need to bring them for my test next week..
would anyone please tell me where i could get a copy of those3rd July 2002 at 13:18 #33336Adriana InfanteGuest
What do you think? about :
GOS = Fails + congest
—————— * 100
Calls10th July 2002 at 07:35 #33337Naveen KumarGuest
What is the relation between GOS ,BHCA and traffic (in Erlangs)?
How can we calculate the traffic on E1 if we know the BHCA of our system?
What will happen if on a system with BHCA rating of 1 million ,5 million subscribers are calling at a time?26th July 2002 at 13:19 #33338Zubair A.KhurshidGuest
I am evaluating WLL netwrok on CDMA2000-One. I am looking for evaluating number of digital trunks (E1s)required by calculating erlangs and determining GoS. Can anybody send me GoS matrix in excel at email@example.com July 2002 at 12:36 #33339Mehmet BeyazGuest
GoS is basically the probability (P)of callers will be blocked (congestion). P=GoS usually % 2 for cells and GoS= %0.1.
For some callers not able to establish a call or get a service at the first attempt.
Do not hesitated to contact me if you have further questions
firstname.lastname@example.org July 2002 at 17:05 #33340Zubair A.KhurshidGuest
Can you knidly send me the GoS matrix excel sheet on my e-mail address29th July 2002 at 14:32 #33341Jose QuinteroGuest
Yeas you are right, The gos 1% for example,
Means: for each 100 call one call will be droped.
JIQ29th July 2002 at 15:34 #33342Zubair A.KhurshidGuest
Then what is the range of GoS that should be chosen in a network design?
Zubair29th August 2002 at 07:06 #33343kristhudass rabertGuest
I am Dip.in Electrical but i got job in telecom; WLL technology.
i want to know belows.
1.How to calculate Erlong? and i need formula ?
2. What BHCA in brief?
3.What is the diffrens between CDMA and TDMA?
4.How can we calculate p.xx ?
5.I need Erlong excel table for
B and C7th September 2002 at 07:10 #33344makhijapGuest
I want to know grade of sevice ,can we change the parameter in Gos