- This topic has 38 replies, 1 voice, and was last updated 8 years, 10 months ago by Mic.
28th December 2011 at 23:18 #61763ALUGuest
Synchronous HO disabled but no improvement observed. I think the term ASYNCHRONOUS HO is used when we have Inter Site HO, for intra site HO’s , the BTS doesn’t send the Physical Information(probably because it already knows the TA values).
Regarding timer T3105, don’t you think that even if we decrease it, it wont make any difference. The timer is the time between sending of consecutive Physical Info msgs. However, in our case , the Physical Info is not sent even at the first place.29th December 2011 at 12:13 #61764pixGuest
yes, changing the T3105 should not make any difference, but the BTS is not behaving “normally”… so I don’t know what will have an effect or not. Just testing and giving you ideas 😉
When I’m back at the office in few days I will check what triggers (or not) the sending of the PHYS-INFO inside the BTS. But that’s probably what the RTAC is already doing 🙂
pix2nd January 2012 at 11:54 #61765ALUGuest
1st of all happy new year….secondly, another good news 4 U…the problem is resolved.HURRAH!!!! 🙂
The problem was with the clock of the Transcoder. it wasn’t set appropriately. I think they have to map E1’s with E1 and STM with STM(something like that) and after the correct mapping problem got resolved. Thanks for ur support in this regards…even though the problem was related to BSS but still it was a good detailed investigation from our side….great from learning point of view 🙂
Moral Of the Story: “Inter BSC HO Failure Degradation doesn’t necessarily mean that the Core Team is the culprit ;)”2nd January 2012 at 15:52 #61766pixGuest
great to know that ! I didn’t even know the TC had a specific clock 🙂
So your TC is configured with E1 towards the Core Network and with STM1 towards the BSC, is that it ?
Thanks again for sharing all this, I hope it will be useful for others.2nd January 2012 at 15:53 #61767pixGuest
and best wished to you too !!4th January 2012 at 09:01 #61768ALUGuest
It was surprising for me aswell..I think with everything on IP now,the new TCIF board has to be given a clock. The TC was having STM1 with MSC but the clockmode of the TC wasn’t set to anything(neither E1 nor STM).So,that’s why it was causing problems. Once, they set it correctly, problem got resolved.4th January 2012 at 13:18 #61769pixGuest
understood, thanks 😉9th January 2012 at 14:26 #61770SureshGuest
we are using huawei Bts/Bsc/Msc. we are facing HO Failure with cause mentioned as L2 layer failure.Does anyone know the reason for this HO Failure.16th January 2012 at 16:20 #61771MicGuest
TC Clock is a great thing to know, Can you tell me in detail how to check it & what corrections need to be done….It will be very helpful to resolve if any such issue is there