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18th August 2008 at 08:07 #53551SMGuest
I would like to know the suitable value of T3101 in Alcatel and Ericsson.
To optimize this timer will improve the SDCCH fail in our network?
Thank you very much.28th August 2008 at 15:30 #53552ali abbasGuest
what is 3162 parameter.5th December 2008 at 03:16 #53553SAGuest
In the Ericsson networks, the T3101 can indeed improve the SDCCH Assignment Failure. If you monitor the counter CESTIMMASS from the dbo_CELL_MAIN or dbo_CELL_MAIN_PEAK tables from the GRAN_seg1 server you will see that at least a 5% of the CCALLS correspond to the expiration of the T3101. The default value for Ericsson is 1,5 seconds. We found an improvement by moving it to 3 seconds.
Of course, ideally would be to have a Protocol Analyzer and measure the average time for the timer and see if the actual value is correct!
I think in Alcatel-Lucent is easy to set a new value. However in Ericsson, even a small restart is needed on a BSC level.
SA15th December 2008 at 11:49 #53554optimiserGuest
In alcatel, the default value is 3seconds I think.30th December 2008 at 17:14 #53555fouadGuest
note that the default value on alcatel is 3*0.1s=0.3s and not 3S13th April 2009 at 06:03 #53556m@uGuest
In Nortel is 3 seconds the default.15th April 2009 at 16:56 #53557innovaGuest
Default value of T3101 in Alcatel can’t be that low 0.3s. Should be 3 sec.15th April 2009 at 17:58 #53558RexGuest
in Alcatel is 30*0.1s=3s12th May 2009 at 16:20 #53559ACVGuest
Which is the deafult value in Siemens and Nokia?25th October 2012 at 13:45 #53560optimaGuest
what is best value for T10 & T3101 timers in Nokia BSC?
Thanks a lot18th April 2013 at 20:03 #53561IMRANGuest
Have faced the issue of “Missing Immediate Assignment”, but there was no SD blocking blocking on cell + routing area has been updated without doing anything, not even changes the MS location. Could anyone share the reason or explain it?19th April 2013 at 21:10 #53562pixGuest
check co bcch/bsc, resurgences, interferences.