On Fri, 5 Jun 2009, Philipp Kempgen wrote:
> Steve Edwards schrieb:
>>
>> One of my AGIs sets almost 600 channel variables.
>
> Wow that's a lot. Why would you do that?
Why? That's always a tough question :)
It's a "survey" system. Ask a question, record (voice or DTMF) a response,
maybe branch based on a single DTMF.
All the "steps" are stored in the database.
When a call comes in, an AGI looks up the steps for the DNIS and loads all
the variables of the form:
STEP-01-DATA -- name of variable, branch targets, etc
STEP-01-MAX-LENGTH
STEP-01-MIN-LENGTH
STEP-01-PROMPT -- path to a wav file
STEP-01-TYPE -- types are BRANCH, DTMF, END, PROMPT, VOICE, etc.
.
.
.
STEP-xx-DATA
STEP-xx-PROMPT
STEP-xx-MAX-LENGTH
STEP-xx-MIN-LENGTH
STEP-xx-TYPE
(There's actually 8 variables per step. One customer has 75 steps. Thus,
600 channel variables.)
Each type is handled by a separate AGI.
The dialplan (in AEL) just loops through the indexes. A switch statement
determines which AGI is invoked. A branch just changes the index. I never
touch the database again until call completion.
All the control "logic" is in the database.
If a customer wants to add or delete a step, it's just a simple update to
the database. If a customer wants to add a new type (SSN?), it's just a
new AGI.
It seems to be very flexible, easy to maintain and extend -- so far :)
The system was just put into production on Monday.
If I can talk the client into it, I want to add a LABEL type so I can
branch to a label instead of a step number -- shades of BASIC :)
Thanks in advance,
------------------------------------------------------------------------
Steve Edwards [email protected] Voice: +1-760-468-3867 PST
Newline Fax: +1-760-731-3000
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