[Freeswitch-users] Running an expect script from freeswitch

Hi, I am running an expect script that is executedn from a call lua session. The problem is that the responses come very slowly when run from within freeswitch. It takes maybe 5 seconds to get each response to the expect script. I am starting the expect script from lua_mod with os.execute. I have also tried session:execute. The behaviour is the same in both cases. When running the expect script within a normal shell, it executes immediately without any delays. What could be causing the very slow responses to the expect script inside freeswitch ? Mike