- This topic has 14 replies, 1 voice, and was last updated 11 years, 2 months ago by Pix.
7th July 2009 at 06:36 #57821LucasGuest
What is the solution to TREs which give Nerr from NPO but on OMC-R side not locked and no alarm7th July 2009 at 10:01 #57822PixGuest
Which version of NPO are you using ?
There were some bugs, but in any case: the “Nerr” is not due to TRE !
It is due to one of three things:
1/ PM Files are corrupted
2/ The value of the indicator is a rate : X / Y, but Y = 0. So the indicator = Nerr (you can’t divide by zero 🙂 )
3/ Bug in NPO
Pix7th July 2009 at 15:42 #57823LucasGuest
I can’t explain by now the version but just know is in B10.
The problem is you always have people not being able to make calls(Got it myself) for a place where all TREs give Nerr. The only solution we have is to replace TREs and sometimes combiners and the situation gets to normal. Can I get another solution apart from changing the TREs.
Lucas.7th July 2009 at 17:12 #57824PixGuest
mmm.. okay, so that’s something else.
The tRE is faulty, so it doesn’t bring any counter.
The “Nerr” is just a side effect of the HW failure 🙂
It’s like when you’re in a car, the engine is DEAD. And you ask if there is any other way to move the car forward…
The “Nerr” is not what should be fixed. It is just another proof that your TRE is Down.8th July 2009 at 05:53 #57825LucasGuest
So is there any other solution to this apart from changing the TREs, be reminded that the TREs show no alarm on OMC-R.My worry is on the number of TREs that we change.8th July 2009 at 07:48 #57826PixGuest
The TRE is not able to establish call ! So it is down, even if there is no alarm on OMC-R.
You could create a QoS Alerter, and you’d see an alarm.
Now, those are the typical actions you could try :
Reset the TRX, the OMU, the TCU, the BTS, etc.
Delete the BTS and re-create it
Same with Abis.8th July 2009 at 14:17 #57827asoGuest
Do you have good document to explain Alcatel Radio parameter for B9.
Your help is highly appreciated.
BR8th July 2009 at 15:56 #57828pixGuest
sorry, i can’t share those documents, unless you work in Alcatel-Lucent. I’m deeply sorry. Do you have access to RNO or NPO ?9th July 2009 at 19:20 #57829asoGuest
Any way thanks15th July 2009 at 11:45 #57830asoGuest
Is there Parameter radio link time out for ALcatel dedicated for AMR?
aso15th July 2009 at 11:59 #57831pixGuest
yes. Radiolink_timeout_AMR 🙂15th July 2009 at 14:00 #57832asoGuest
Do this parameter is in B9 and i checked the cell parameter i could not found it ca you please help me .
And if it is possible to help if we changed the TRX_pref_mark for all TRX to the same priority why the traffic is don’t distributed equally, is there a way assign TCH on the basis of interference, second one why PDCH can is not recommended on BCCH TRX.
Your help is highly appreciated.
aso15th July 2009 at 17:27 #57833pixGuest
that’s a lot of questions 🙂
1/ RLT AMR is in B10 onwards only.
2/ If all trx pref mark are equal, the less interfered trx is favoured. If all trx are equally interfered, the last trx is always favoured for cs traffic. The ps traffic will be allocated on the first trx. This strategy is to have consecutive pdch allocation of ps traffic, without getting disturbed by random tch allocation.
If you don’t notice that the less interfered trx is favoured… then it’s probably because
a) you are using hopping (all trx equally interfered)
b) your interference bands are not “fine” enough, you should resize them.
3/ PDCH can be forced onto the BCCH TRX by default (if timeslots remain), thanks to the parameter PREF BCCH GPRS (or something like this)
pix16th July 2009 at 11:15 #57834asoGuest
Thanks pix for your kind support and excuse me my friend for a lot of Questions .
aso16th July 2009 at 17:14 #57835PixGuest
Aso, no problem 🙂
I don’t mind answering many questions, it’s just that I’m afraid you’ll mix up my answers.