[asterisk-biz] Custom AMD Module for Improved Answering Machine Detection Needed

[Alex Balashov]

The best off-the-shelf solution I've seen for this comes from Paraxip in 
the form of their NetBorder CPA (Call Progress Analysis) product.  They 
use a B2BUA that you can send calls through out of Asterisk, and which 
will return a certain code as a custom SIP header depending on the 
disposition.

"The best" still isn't saying much.  You're going to get many of the 
same problems as you get with AMD.  The marginal improved accuracy may 
or may not be worth the cost.

That's just how it is.  This is impossible to do right in a way that is 
applicable to the variance of environmental and acoustic situations - as 
you mention, works with one carrier and not with another, and other 
variables.  Most likely, developing such a thing would be a pointless 
waste of time and energy because to get beyond a certain rate of 
accuracy is to ask for a perpetual motion machine.

Just my $.02, of course.

Chris wrote:

> We're looking for a company (preferably U.S. based) that can help us 
> with the development of a custom module for advanced Answering Machine 
> Detection.  We need to be able to properly detect a live answer vs. an 
> answering machine or voicemail (including cell phone ringbacks, etc.) as 
> well as wait for the beep to leave a message.  We've tried tweaking the 
> built-in AMD settings for Asterisk, but all this accomplishes is 
> improving detection rate for one carrier and eliminating it for 
> another.  We're looking for a company that has worked on similar 
> projects before that could help us with a potential solution.  Thanks in 
> advance!
> 
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-- 
Alex Balashov
Evariste Systems
Web    : http://www.evaristesys.com/
Tel    : (+1) (678) 954-0670
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