[Freeswitch-users] Help with Using Mod_AVMD

[Michael Collins]

Please note: mod_avmd is *not* answering machine detection. There is a
private mod_amd specifically for this purpose. Contact
consulting at freeswitch.org if you are interested in that.

mod_avmd is designed to detect the "beep" played by voicemail systems and
answering machines. If a beep is detected then mod_avmd emits an event to
the FreeSWITCH event sub-system. I would attach with fs_cli and listen for
the event. Try this at fs_cli:

/log 0
/event plain CUSTOM

Then make some test calls and see if there is actually a detection. Once
you confirm positive detection then you can see what's up with the Lua
input callback.
-MC

On Thu, Nov 3, 2011 at 10:39 AM, Dave <dave at clancysystems.com> wrote:

> **
> Hello,
>
> I am creating an external application that uses FreeSWITCH ESL to initiate
> an outbound call and then run a LUA script.  Within the LUA script I am
> executing AVMD. I want to see if its a human or voicemail on the other
> end.  The outbound call is made and the LUA script executes.
>
> Currently I would just like to see a consoleLog entry made by the onInput
> function in the LUA script, but that function does not seem to be called.
> AVMD starts the file is streamed then AVMD stops. As shown in the log.
>
> I think I'm missing something.
> Dave Goodwin
>
>
> Pertinent FreeSWITCH Log Info:
>
> -------------------------------------------------------------------------------------------------------
> EXECUTE sofia/internal/7202126254 at xxx.xx.xxx.xx avmd(start)
> 2011-11-03 11:05:27.291678 [DEBUG] switch_core_media_bug.c:360 Attaching
> BUG to sofia/internal/7202126254 at xxx.xx.xxx.xx<sofia/internal/3035649554 at xxx.xx.xxx.xx>
> 2011-11-03 11:05:28.311249 [DEBUG] switch_ivr_play_say.c:1279 Codec
> Activated L16 at 8000hz 1 channels 20ms
> 2011-11-03 11:05:28.350313 [DEBUG] switch_rtp.c:3082 Correct ip/port
> confirmed.
> 2011-11-03 11:05:40.235535 [DEBUG] switch_ivr_play_say.c:1649 done playing
> file
> EXECUTE sofia/internal/7202126254 at xxx.xx.xxx.xx<sofia/internal/3035649554 at xxx.xx.xxx.xx>avmd(stop)
> 2011-11-03 11:05:40.237488 [DEBUG] switch_core_media_bug.c:467 Removing
> BUG from sofia/internal/7202126254 at xxx.xx.xxx.xx<sofia/internal/3035649554 at xxx.xx.xxx.xx>
>
> Lua Script:
>
> -------------------------------------------------------------------------------------------------------
> function onInput(session, type, obj)
>     if type == "dtmf" and obj['digit'] == '1' and human_detected == false
> then
>         human_detected = true
>         freeswitch.consoleLog("INFO","Human Detected\n")
>   return "break"
>     end
>     if type == "event" and voicemail_detected == false then
>         voicemail_detected = true
>         freeswitch.consoleLog("INFO","Voicemail Detected\n")
>         return "break"
>  else
>         freeswitch.consoleLog("INFO","Nothing Happened\n")
>         return "break"
>  end
> end
>
> if session:ready() then
>  ---  the call has been answered.
>  session:setInputCallback("onInput")
>  session:sleep(1000)
>  session:execute("avmd","start")
>  session:sleep(1000)
>  session:streamFile("ivr/" .. wav_file)
>  session:execute("avmd","stop")
>  session:sleep(1000)
>  fileName = "Completed " .. tostring(call_from_num) .. os.time() ..
> tostring(call_to_num)
>  freeswitch.consoleLog("INFO","FileName = " .. fileName .. "\n")
>  local myfile, ErrStr = io.open("log/outcall/" .. fileName,"w")
>  if myfile then
>   myfile:write(call_from_num .. "|", call_to_num .. "|" , os.date())
>   myfile:flush()
>   myfile:close()
>  else
>   freeswitch.consoleLog("INFO","Error writing File = '" .. ErrStr .. "'\n")
>  end --if
> end --if
>
>
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