Hi LaF0rge, all, please review the zecke/request-queuing branch up to commit 18d42b6845f22131a. I would like to get this part of my patch series merged. The code begins to remove the data pointer for the l1if_gsm_req_compl call and will alaways pass the trx to the callback. The lchan is found through the hLayer3 pointer. holger