This seems like a good place to post this, as I'm sure there's lots of calling
card operators here.
I have someone who wants to build a calling card with some extra challenges.
When a users time on a call is almost up, they want to allow the user to
recharge their account while still on the call. I can of course call the Dial()
application and pass it call limit information, but when the call limit is
reached, Dial() is just going to hang up.
Because a call will contain both billable and non billable minutes, they need
to keep track of these timers separately. When a user is recharging their
minutes, they aren't getting billed. After they have finished recharging, and
drop back to the original call (remember, it was not disconnected, and the
other person should have been 'on hold' during the recharge), then they go back
to being billed again.
Question... how the HECK can I do this with Asterisk?
The only thing I can come up with is to have an external application send a SIP
reinvite when the callers time is almost up and redirect their media to another
location so that the account can be recharged. A problem with this is that even
if you do this, the Dial() application is still going to end the call when the
call limit is reached. I think you would have to track the call time somewhere
else and not pass limit information to Dial() at all. The other application
tracking the call time would send a SIP reinvite when the call time was up.
Anyone done this?
Doug.
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