Regression

trial-ttcn3_bts_tests:sysmo.ttcn3_bts_tests.TC_chan_act_a51 (from Titan)

Failing for the past 1 build (Since #2729 )

Timeout waiting for IMM ASS
      BTS_Tests.ttcn:7305 BTS_Tests control part
      BTS_Tests.ttcn:6533 TC_chan_act_a51 testcase