[Freeswitch-users] Determine if a number is valid/working

[Saugort Dario Garcia Tovar]

Hi,

I think you count with several tools to "clean-up" the calling list. You 
could use call progress detection to detect if the number is active. 
Also, you could use answer machine detection to verify if a real person 
is at the other end. Even you could use ASR and TTS in a script to get 
some interaction from the called person. However, you could never get 
sorted all cases, for example, the number could be a good one but belong 
to another person or it belong to the main number of a company.

FS give some tools. I quite sure you can do some tone detection (busy, 
no answer, sit, reorder, disconnect, etc) , take a look at:

http://wiki.freeswitch.org/wiki/Misc._Dialplan_Tools_tone_detect
http://wiki.freeswitch.org/wiki/Early_Media
http://wiki.freeswitch.org/wiki/Mod_spandsp

About answer machine detection, I not sure how good is FS. Take a look to:
http://wiki.freeswitch.org/wiki/Mod_avmd
http://wiki.freeswitch.org/wiki/Mod_vmd

You could combine a third party tool to make the work, check this link
http://www.sangoma.com/products/call_center_software/netborder_call_analyzer.html

I hope this helps you

On 2/19/2013 3:07 PM, Michael Collins wrote:
> Well, pretty much the only way to guarantee that a number is working 
> is to call it and see what happens. I suspect Ken Rice has some 
> experience in this area and I'd definitely like to hear it. If anyone 
> else has thoughts I'd like to hear them as well.
>
> -MC
>
> P.S. - Why does the customer think that calling the number and playing 
> a short message will take too long? Also, what is the customer's 
> primary concern about the web leads having non-working numbers? Is it 
> because they have humans manually dialing them and it's a waste of 
> time when the person comes across a bad number?
>
> On Tue, Feb 19, 2013 at 8:40 AM, Sean Devoy <sdevoy at bizfocused.com 
> <mailto:sdevoy at bizfocused.com>> wrote:
>
>     HI All,
>
>     My web site customer’s call center claims that 1/3 of their web
>     leads have nonworking phone numbers.  Short of calling it, is
>     there any way with FS (or even a paid service) to determine if a
>     given phone number is a working number?  I would like to make an
>     Ajax SOAP call to a PHP page that checks (or dials) the number and
>     returns a status for the validity of the phone number.
>
>     I have an LUA script that will call, play a short message and hang
>     up, but the customer thinks that may take too long.
>
>     Any ideas?
>
>     Thanks,
>
>     Sean
>
>
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> -- 
> Michael S Collins
> Twitter: @mercutioviz
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-- 
Atentamente,
*Dario García*
Consultor.

CCCT, Nivel C2, Sector Yarey, Mz,
Ofc. MZ03a.
Caracas-Venezuela.
Teléfono: +58 212 9081842
Cel: +58 412 2221515
dgarcia at anew.com.ve
http://www.anew.com.ve
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