- This topic has 17 replies, 1 voice, and was last updated 8 years, 7 months ago by Moteswa Lusinde.
29th December 2005 at 14:32 #43560NavinGuest
Ours is a multivendor gsm n/w where the latest eqpt is from nortel.We seem to have some problem in analysing stats with pro-optima (Stat Machine for nortel gsm).
1)Most of the sites are showing more than 100% Call_setup_success_rate which is not true
2)TCH_Blocking and SD Blocking showing 0 but complaints from field shows that are there are congestion in the given sites.30th December 2005 at 13:33 #43561MuhammedGuest
We have the same problem too.Can anybody offer some suggestion.5th January 2006 at 23:20 #43562t28Guest
it’s simple, you both are using BAD formulas/counters to count quality indicators !!!
you have to study some counters then suggest formulas correctly …6th January 2006 at 06:57 #43563Tech ManGuest
I should agree with T28. Please check your formulas and counters.6th January 2006 at 08:04 #43564madhuGuest
1. the formula for calculating Call Completion Ratio is
CCR= (CCS with answer(Out) + CCS Subs Busy+CCS Unanswered)/ Out going Call Seizure
2.ASR(O.G)= CCS with Answer/Out
going Call Seizure
ASR(I.C)=CCS with Answer/Calls Carreied I.C
madhu6th January 2006 at 08:15 #43565PrabhuGuest
1)100% setup is good that means ur BTS and BSC are working fine now you have to check the congestion in the “A interface” this is not reflected in your performance I guess.So please check the this out.
2)TCH and SD blockings is measured only on “Abis Interface”.
3)Though you get a SD u may not get a TCH from the MSC. So please do check this out
Prabhu6th January 2006 at 10:41 #43566slimGuest
the problem may be not the formula, the values which uploaded from OMCR are not correct. So u have to chekh the incoming file from OMCR.12th January 2006 at 05:18 #43567Nitin KhGuest
Prabhu is right ..
The congestion on the A interface might be the reason…
Nitin14th January 2006 at 08:31 #43568joodGuest
you have to check A-bis & A, by the related protocols analyser & (post proccesed the values) & export it to yuor OMC.14th January 2006 at 09:50 #43569PraveenGuest
One C7 Link can catter how many E1s19th January 2006 at 19:15 #43570DJGuest
Arnd 131/2 E1s.
Rgds25th January 2006 at 19:56 #43571cybhertGuest
someone said it is 128 E1s for one C7 link…yup congestion on the signallink links may add to this.. even though if you have adequate circuits on the BSC side if there is a high traffic on the signalling on the MSC side surely connection(call set-up or sms transactions) will be bad..
Good Luck…27th January 2006 at 08:13 #43572tufailGuest
what is 1X1, 1X2 etc in Frequency planning.. need help6th February 2006 at 17:37 #43573EdmundGuest
What is the difference between Call Completion Rate and Call Setup Success Rate. Thanks7th February 2006 at 10:51 #43574yrrahGuest
To me a Call Setup Success Rate is when you get a TCH when you initiate a call.
Call Completion Rate is when you get your TCH and when you have finished, you release your TCH. It is a KPI that can allow you to know the rate of good end-to-end call you have on the network.