Regression

SGSN_Tests.TC_attach_closed_add_vty (from Titan)

Failing for the past 1 build (Since #43 )

"VTY Timeout for prompt: enable"
      SGSN_Tests.ttcn:3922 SGSN_Tests control part
      SGSN_Tests.ttcn:2578 TC_attach_closed_add_vty testcase