- This topic has 4 replies, 1 voice, and was last updated 12 years ago by lily.
25th March 2011 at 10:11 #66022lilyGuest
Good day, dear experts!
Please, help, if you can 🙂
I see that counter MC926 for one BSC in BH is about 450-800 (attempts per hour).
(MC926 – Number of TCH channel allocation rejected for cause : Maximum TCH processing capacity of CCP reached Whenever a TCH cannot be allocated due to the TCH processing capacity of CCP reaches the limit defined by the MAX_TCH_PER_CCP parameter)
At first, I don’t know (shame on me of course) the value of the parameter MAX_TCH_PER_CCP . Moreover – I can’t find it anywhere: neither in BSC’s parameter no anywhere else (in OMC-R docs :).
Please, help me to find it 🙂
We have 3 ccp in that BSC, all 3 of them loaded equally – on 89-90%.
Is it too much? but we have several BSCs where the average ccp load is higher but the MC926 is equal to 0.
We do not have any subsribers’ complaints from that region (yet), but i think that the situation impacts the service anyway…
I’ll be very grateful for your comments and help!
Thanks in advance,
best regards, Lily26th March 2011 at 14:23 #66023pixGuest
the ccp is limited to 1000 TCH, which is -based on ALU traffic model- 900 erlangs.
Could you check the max number of TCH during the busy hour, in the whole BSC ? I don’t think you can split the value “per ccp”, as the trx are not statically allocated on one specific ccp. (or are they ? i’m not sure anymore ^^ )
pix29th March 2011 at 09:41 #66024lilyGuest
Thanks a lot for your answer, but I have some more questions 🙂 if you please 🙂
About 1000 TCH – do you mean that the processing capacity of ccp is 1000 simultaneous connections (HR or FR) ?
And max number of TCH during the busy hour – hmmm….I can’t find a counter or indicator which could show us exactly such thing… We need max number of simultaneously connections (in FR or HR) – something like this I think… but all I’ve found – RTCH_assignment per hour or max numb of simultaneously busy CS_TS (MC29a)….
And the most important question – what happened??? Did MX BSCs mutated and now trx allocation is not static anymore (as we all had believed) ? 🙂
You know something….
Once again – many thanks, dear Pix!
Best regards. lily29th March 2011 at 19:08 #66025pixGuest
ok, all good questions…I ll reply to all of them tomorrow !
i’m hiding nothing, but i just forgot how trx are mapped in the BSC Mx 😉 i’m a rf engineer, i don’t know much about equipments… they do scare me a little 🙂
pix29th March 2011 at 21:05 #66026lilyGuest
Good night, dear Pix!
I’m very very grateful to you !!
Sorry for the panic about MXs… But you know, they are really bad-tempered 🙂 i just thought… maybe there was a precedent 🙂
recently we had plenty of troubles with them 🙂 poor our TAC 🙂
so i shun them too 🙂
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