[Freeswitch-users] Best way to implement real-time ivr from mysql

Tim St. Pierre fs-list at communicatefreely.net
Wed Feb 9 19:56:25 MSK 2011

Hello list,

I'm trying to implement a flexible, but easy to administer IVR system 
for our multi-tenant PBX.

My goal is to be able to build a flexible auto-attendent scheme for 
incoming calls, based on data in a mysql database.

The functionality I need is:
    -Different options based on time of day
    -Playback of 1-2 audio files while listening for digits (Thank you 
for calling abc company)
    -Single digit options set some variables, then transfer to a defined 
extension (press 1 for sales)
    -Multi-digit options are checked against a pattern, then a transfer 
is executed (enter the extension now ...)

Not very complicated, I know, but making it scale is tricky.

I have tried LUA, but LuaSQL has issues.  Even using ODBC, I still get 
memory leaks and random errors with file handles etc.

For the most part, I haven't had any issues with xml_curl getting config 
from another server that generates it with PHP.  I'm exploring this, but 
it looks like I'll have to implement the following logic:
    -Call comes in, and a dialplan is returned that plays the greetings, 
sets some variables, and does a play_and_get_digits, followed by a 
transfer back to the dialplan, so we can figure out what to do based on 
the digits.
    -The callback to the dialplan evaluates the dtmf presented, and 
decides what action to take, returning that in another dialplan piece.

I think this could work. but it means that a dialplan lookup has to be 
done each time someone makes a selection.

Is there a better way, or does that make the most sense?



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