Reply To: SDCCH ABIS Fail Ratio 22nd July 2012 at 06:00 #55474 pixGuest mathias, A ratio of “1 SDCCH/8” per TRX is a safe strategy. You can reduce to 2 SDCCH/8 per 3 TRX And the minimum should be: 1 SDCCH/8 per 2 TRX