What version of FS are you running? You need a fairly recent version of FS to support the timeout parameter of con:pop Pop(1,5) means block and wait, but only 0.05 (s) Is that what you want? I guess not, you usually don't want to block a lua script that handles audio. And you certainly don't want to repeat this "blocking" 20 times per sec, polling for DTMF events There are better ways to catch DTMF (setInputCallback ...) ( I think anthm answered you on IRC..) -----Original Message----- From: freeswitch-dev-bounces@lists.freeswitch.org [mailto:freeswitch-dev-bounces@lists.freeswitch.org] On Behalf Of adam harris Sent: Wednesday, April 04, 2012 03:26 To: freeswitch-dev@lists.freeswitch.org Subject: [Freeswitch-dev] error in con:pop wrong number of args I am getting this error from the test code below. I have used 2 arguments but it is picking up 3? 2012-04-03 21:16:08.583714 [ERR] mod_lua.cpp:191 Error in pop expected 1..2 args, got 3 stack traceback: [C]: in function 'pop' /usr/local/freeswitch/scripts/aprompt.lua:21: in function '(for generator)' /usr/local/freeswitch/scripts/aprompt.lua:21: in main chunk --------------------------------------------------- dtmfbuffer = "" con = freeswitch.EventConsumer("DTMF") session:setVariable("playback_terminators", "0123456789") session:execute("playback", "sound/test.wav") while ((session:ready() == true)) do for e in (function() return con:pop(1,5) end) do event_name = e:getHeader("Event-Name") or "" if (event_name == "DTMF") then print(dtmfbuffer) end end end session:hangup() _________________________________________________________________________ Professional FreeSWITCH Consulting Services: consulting@freeswitch.org http://www.freeswitchsolutions.com FreeSWITCH-powered IP PBX: The CudaTel Communication Server http://www.cudatel.com Official FreeSWITCH Sites http://www.freeswitch.org http://wiki.freeswitch.org http://www.cluecon.com FreeSWITCH-dev mailing list FreeSWITCH-dev@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-dev UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-dev http://www.freeswitch.org