Parity Error in Group Switch

[rorni]

Hello
Can someone help me with this issue :

BC 11, duplicated group switch

+/- Every ten minutes, an error appears in gjlop :

  B-POS   GS-M  S  ALARM-TYPE  ALARMDATA                            TIME    
  -----   ----  -  ----------  ---------                            ----      
 3-0-00  0-02  1  PARFAULT    PARITYFAULT IN TIMESLOT:             17:10:48
                               1,4,6,7,12,15,21,24                          
                               INPUT NOT CONNECTED FROM GSM:                
                               6,7

and this for a lot of system links in gsm 0.

Gjlsp is Ok, no one system link found in fault.
gsfti of gsm 0,6 and 7 are ok (both option "boards" and
slots)

But times to times, buffer transfer failure appear when
system is running on GS 1 .

Do I have to focuse my search on gsm 0 or the reason of this error can be on a other gsm ?
Any help will be appreciated
/rorni

 

[fouesnant]

Hi

You problem is depending of the origine of the GSM synchronization and the way the PCM line are connected to the GSM's; is it direct PCM line connection? Is the external synchronization and internal synchorization LIM identical?
ave you tried to replace board in the faulty GSSIDE 1?