I’m not irritated at all, I just can’t stop writing sometimes. That’s why i said “enough !”
It seems to me you have the answer to your question already… is there any dark spot still ?
I don’t know all your features, but it is possible to multiplex your O&M and your RSLs on one TS. LapD concentrated… it should be related to your sdcch timeslots. With a special radio ts configuration, you can multiplex the RSL on the 2 E1 TS reserved for the TRX.