TC_sabm_contention BTS_Tests_LAPDm

Regression

Failing for the past 1 build since #2757

Took 45 sec (from Titan)

Stack Trace

"BTS_Tests.ttcn:634 : Tguard timeout"
      BTS_Tests_LAPDm.ttcn:1466 BTS_Tests_LAPDm control part
      BTS_Tests_LAPDm.ttcn:195 TC_sabm_contention testcase