I am running Asterisk and using Answer machine detection with call files on a virtual Vcloud server running Centos 5.3 and LAMP. I am finding that AMD is only detecting HUMAN or MACHINE for about 30% of the calls (I sent over 50,000 outbound calls last week, and 70% said NOTSURE). <div>
<br></div><div>I have a suspicion that the problem may be due to the timing source on virtual server when its under load delivering lots of asterisk calls, since the AMDSTATUS always reports things such as:-</div><div><br>
</div><div>AMDSTATUS:NOTSURE-AMDCAUSE:TOOLONG-5500</div><div><br></div><div>My AMD.conf settings are all set to default:-</div><div><br></div><div>[general]</div><div>initial_silence = 2500 ; Maximum silence duration before the greeting.</div>
<div> ; If exceeded then MACHINE.</div><div>greeting = 1500 ; Maximum length of a greeting. If exceeded then MACHINE.</div><div>after_greeting_silence = 800 ; Silence after detecting a greeting.</div>
<div> ; If exceeded then HUMAN</div><div>total_analysis_time = 5000 ; Maximum time allowed for the algorithm to decide</div><div> ; on a HUMAN or MACHINE</div>
<div>min_word_length = 100 ; Minimum duration of Voice to considered as a word</div><div>between_words_silence = 50 ; Minimum duration of silence after a word to consider</div><div> ; the audio what follows as a new word</div>
<div>maximum_number_of_words = 5 ; Maximum number of words in the greeting.</div><div> ; If exceeded then MACHINE</div><div>silence_threshold = 256</div><div><br></div><div><br></div><div>
Just wondering if any of you AMD users have any ideas as to what I should check. When I view this on the console I see that it jumps to too long almost immediately:-</div><div><br></div><div><p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Courier New"">AMD:
initialSilence [2500] greeting [1500] afterGreetingSilence [800]
totalAnalysisTime [5000] minimumWordLength [100] betweenWordsSilence [50]
maximumNumberOfWords [5] silenceThreshold [256] maximumWordLength [5000]</span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Courier New"">
-- <span style="background:yellow;mso-highlight:yellow">AMD: Channel
[SIP/faktortel-00001385]. Changed state to STATE_IN_SILENCE</span></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Courier New";
background:yellow;mso-highlight:yellow"> -- AMD: Channel
[SIP/faktortel-00001385]. Too long...</span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Courier New";
background:yellow;mso-highlight:yellow"> -- AMD: Channel
[SIP/faktortel-00001385]. Too long...</span><span style="font-size:9.0pt;
font-family:"Courier New""></span></p><p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Courier New";
background:yellow;mso-highlight:yellow"><br></span></p><p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Courier New";
background:yellow;mso-highlight:yellow">Thanks</span></p><p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Courier New";
background:yellow;mso-highlight:yellow"><br></span></p><p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Courier New";
background:yellow;mso-highlight:yellow">Steve</span></p></div><div><br></div><div><br></div>