[asterisk-users] Voicemail- Recorded Mesage Low Volume

[Daniel Hazelbaker]

On Jun 30, 2008, at 1:04 PM, asterisk-users-request at lists.digium.com  
wrote:

>> But to get asterisk to run a different/fake sox, just install  
>> whatever
>> you want to run as /usr/local/bin/sox and then edit your  
>> safe_asterisk
>> script as I mentioned below.
>
> I think this is a bad approach. It's going to be a big "gotcha" down  
> the
> road for somebody :)

Agreed. :)  It would be nice if there was something similar to  
externnotify that was not just a notification but a pipe that you  
could modify/filter etc the audio file before it continues on its  
merry way.

>> Asterisk runs the program 'sox' using the first match in your  
>> $PATH, so
>> by updating the $PATH before asterisk runs you can direct it to run a
>> different sox program.
>
> A quick grep through the Asterisk (1.2.28) sources shows res_monitor  
> using
> soxmix if the channel variable MONITOR_EXEC is not defined -- but  
> nothing
> in app_voicemail. Am I missing something?

It is possible this is a 1.4.x feature, and specifically it is for the  
e-mail sending system which as I am thinking about it is a 1.4  
feature.  I don't use 1.2.x and never have, I started with 1.4.  The  
other option, again I don't know if this is available in 1.2, is to  
use the externnotify option.  When a voicemail is left this script/ 
program is called with the context, extension and number of new  
voicemail messages.  With a little bit of shell scripting you could  
walk the list of all messages and process any left (modified) within  
the last 20 seconds via sox.  It is a little more iffy and prone to  
race conditions, but it should work.

Unfortunately I couldn't give you a specific example of doing it this  
way as I use the e-mail style.

Daniel

>
> Thanks in advance,
> ------------------------------------------------------------------------
> Steve Edwards      sedwards at sedwards.com      Voice: +1-760-468-3867  
> PST

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