Reply To: SDCCH blocking is high

first change hardware in most of case due to hardware malfunctioning it happen,

after change if still not resolve than shift BCCH on different TRX,

If still not resolve change BCCH trx from Hopping to No-hopping mode,

if still not resolve enable TCH immediate assign

for complete doc on SDCCH get from below,

http://www.telecomsource.net/showthread.php?179-Nokia-2G-SDCCH-Study