- This topic has 5 replies, 1 voice, and was last updated 8 years, 11 months ago by Amol Pansare.
24th February 2011 at 04:40 #65852Shekhar RawalGuest
Please share Root causes to check to improve SCR of Huawei(R4-MSOFTX3000) system. Presently it is 99.18 of GSM GMSC as compare to other MSCs having 99.98 in the same Network. Problem facing in case of GMSC.
Anyone can share the troubleshooting Points on forum or my personal mail id mentioned.
Thanks.24th February 2011 at 07:23 #65853BijoyGuest
Analyze the clear codes.Seems some clear codes on signalling is higher
Bijoy24th February 2011 at 07:53 #65854ShekharGuest
yes i hv checked getting errors in 1 hr:
CAUSE166_network error (Count=7535)
CAUSE169_temporary error(Count=532)30th April 2011 at 09:23 #65855Shekhar Rawal : +91-9351055533Guest
This is for Sharing Purpose :
In our Network We have improved SCR by good Percentage(98.81 to 99.50 in one Node having less SCR).
RCA : Huge Error Count : 166_Network Error & 169_Temporary Error are decreased by following Action Plans :
Major Improvement happened by Changing Some Timer at IN end ,Analysis done on the basis of Traces Captured.
Rest Things done for Improvement are :
->All SLC TS are blocked to get rid off from un-necessary attempts/Context losses
->Reset on TDM CIC / BICC CICs done.
->Reset of SS7 Links/M3UA Links.
->Some Hardware Change overs on which major Count of Call Loss observed.
->IPBCP Timer (b/w MSS & MGW) Value increased for all ADD REQ/ADD REPLY.
->Level routing & Tone Audit done based discrepancies removed (Also will improve ASR).
Also you have to check these Errors responsible for SCR Calculation :
•CAUSE016 – temporary failure
•CAUSE027-Switch equipment failure
•CAUSE061 – no CR resource
•CAUSE062 – no CCB resource
•CAUSE166 – network error
•CAUSE169 – temporary error
•CAUSE170 – device congestion
•CAUSE201 – IWF resource unavailable21st May 2011 at 14:19 #65856danish2891Guest
Thanks for knowledge sharing.
I wud like to Know one basic thing.
What are the TGs you are capturing to calculate SCR.If only BSC TGs are selected then it automatically goes high.21st November 2011 at 09:25 #65857Amol PansareGuest
I have MSOFT-R7 and total 39% network error and 14% no route available count in network. pls give me ur no so that i can call u for more details if u dnt mind