- This topic has 7 replies, 1 voice, and was last updated 10 years, 8 months ago by Michael.
22nd May 2007 at 09:20 #47442Patrick.frGuest
Sometimes, i have a PCM failure on BTS ultrasite:
ET => AIS
BOIA => LED orange
TRX => LED orange
FXC ET1/T1 => LED green
No alarm on Ultrasite manager
MML => PCM failure + lap D failure
I switch off/on PSWB => All BTS will be OK.
I don’t why BTS is off.
The problem is between FXC and BOIA.
I have already changed: BOIA, FXC and rack FXC.
Who has an idea?24th May 2007 at 09:41 #47443RoniGuest
thats problem not in your BTS.problem in transmission from BTS to BSc25th May 2007 at 13:19 #47444Patrick.frGuest
No transmission problem but I have this alarm:
I have never seen before.
HIST> BSC1011 BCF-024 COMM 2007-05-24 11:27:32.04
(11011) 7721 COMMUNICATION FAILURE WITH BCF
7721 COMMUNICATION FAILURE WITH BCF
Time supervision has expired or the BCF has sent a
negative acknowledgement to the BSC, thereby cancelling
the ongoing message transfer sequence.
Supplementary information fields
1 reason for the failure (DX error code)
general error message of the system. See General Error Messages of
System for error code explanations.
Correct the possible transmission failure in the Abis interface,
or correct the fault indicated by another active alarm in the BCF.
Is it possible a temperature problem? too hot? is there a pooled temperature?25th May 2007 at 13:20 #47445Patrick.frGuest
I make a mistake, NO AIS on ET.25th May 2007 at 13:26 #47446govindrajGuest
Hav u checked D bus allocation in the Ultasite..28th May 2007 at 13:47 #47447Patrick.frGuest
The BTS are working every days. But i don’t why it cut off.
Since one year: it cut off only between April at October. (hot month)
How works temperature regulation?6th June 2007 at 14:08 #47448Swanand_SoudagarGuest
what do u mean by cut off. Actually in nokia BTS temprature regulation is done using FAN modules on back side of Ultra and base of metro BTS with fresh air comming from one path and hot air pushed outside using fans. there is certain threshold upto what temprature this can go smooth. once temprature crosses the limit BTS mau shut down (cut off) automatically as it is provision in NOKIA.13th August 2010 at 08:23 #47449MichaelGuest
Does anyone know how to clear abis problem on BTS Ultrasite? I am experiencing an Abis Problem only on sector 2. I’m pretty sure that the the antenna and cabling was all good. We already try to swap TRX’s and combiner to isolate the problem. We already changed the Branching Table. We also done 24 Hr. BER Testing and Sync Test on Radio Trs.
Thank you all guys in advance