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marzie
2010-12-09, 07:26 AM
Hi every body
we have site in siemens system which recently increase its config(2/2/2=>2/4/3) but after that we face high call drop.
In one of the sectors I changed half of the channel from HR to FR but CDRs become worse!
in the KPI measurement files the main reason for CDR is " sequence error"
dose any body have any idea for solving this problem? please help me
thanks a lot

radenmohawk
2010-12-09, 09:26 AM
Check parameter, how about freq (Use Baseband of SFH), is it clear?
Have you seen CTRX statistic (RXQUAL vs RXLEVEL)? TRX upgrade is problem.

electron
2010-12-09, 09:29 AM
Hi every body
we have site in siemens system which recently increase its config(2/2/2=>2/4/3) but after that we face high call drop.
In one of the sectors I changed half of the channel from HR to FR but CDRs become worse!
in the KPI measurement files the main reason for CDR is " sequence error"
dose any body have any idea for solving this problem? please help me
thanks a lot

So since it happened exactly after TRX expansion let's check the hardware at first. maybe FM team plugged some faulty TRX

OptimiNSN
2010-12-09, 10:08 AM
This is Hardware Faulty or bad instalation.

marzie
2010-12-09, 01:50 PM
thank you all for your reply
in this site we use hopping and the freq. are clear, also RXQUAL and RXLEVEL are normal,
about the hardware fault, do u think it would be ok if we just check the vswr and alarms?
i would check and inform you about the result