grrrr! I posted a long msg and it didn’t get published.
Ok, to sum up:
lock all TRX
unlock only one TRX at a time, for few hours, then repeat for the other TRX. Goal is to push TCH and SDCCH traffic onto the same TRX.
In the QoS check if only one TRX is having the problem, or if the problem happens during each trial.
Other possibility, if traffic is really low : you have one faulty MS in your cell (i’ve seen this before). You need to isolate the faulty MS in your MSC (I’ve no idea how to do that though…)