[asterisk-users] Tweaking AMD in Asterisk

[Aurimas Skirgaila]

Hi,

the basic settings are pretty good ones. What I did to do improve the
performance and prevent the false positives, I started to recorded every
call, and analyzed every incorrect detection :) Fairly soon I came with
optimal set for my environment:

initial_silence            = 2500
greeting                   = 1500
after_greeting_silence     = 300
total_analysis_time        = 5000
min_word_length            = 120
between_words_silence      = 50
maximum_number_of_words    = 4 ; it's usuall to pickup saying "Jon
Anderssen, hello" in here
silence_threshold          = 384

by the way, for outgoing SIP calls you might want to do this Background
trick as it helped me a lot regarding AMD on SIP.

exten => _X.,n,Background(blank_audio)
exten => _X.,n,AMD


On Wed, Aug 4, 2010 at 5:08 PM, Tino <tino at sparksupport.com> wrote:

> Hello ,
>
> I would like to tweak my Answeing Machine Detection (AMD) in Asterisk. My
> current values are
>
> AMD(2500|1500|300|5000|120|50|5|256)  and  we were able to identify approx
> 25-30 % of all answering machines.
>
> Anybody have any suggestion to improve the accuracy of AMD.
>
> Thanks
>
>
>
>
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-- 
Mvh,
Aurimas Skirgaila
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