[asterisk-users] Ideas for call back when all lines are busy

[Darrick Hartman (lists)]

Does anyone have an example of how to solve the following problem?

Person has 3 analog lines.  The way I have the dial plan right now, if 
all lines are busy and someone attempts an outbound call, they get 
congestion. (something like this)

exten => _1NXXNXXXXXX,1,Dial(${POTS}/${EXTEN},90)
exten => _1NXXNXXXXXX,n,Congestion(5)
; POTS=Zap/G1

What I'd like to do is if the line is busy, a that person receives a 
call-back when a line becomes available.  Is this even possible?

Thanks,

Darrick
-- 
Darrick Hartman
DJH Solutions, LLC
http://www.djhsolutions.com
http://www.djhsolutions.com/wiki