[Asterisk-Users] Custom Callback

[Dinesh]

Hello All,

I am trying to create a custom callback on asterisk.

[custom-callback] 
exten => s,1,Wait(2) 
exten => s,2,Hangup
exten => s,3,Dial(Zap/g0/92962676)
exten => s,4,DigitTimeout(5)
exten => s,5,ResponseTimeout(10)
exten => s,6,Authenticate(1234) 
exten => s,7,DISA(no-password|from-internal)
exten => s,8,Hangup


If I ring my DID and if Caller ID is my cell number, the asterisk server
should hang up the call, Issue a Congestion to my phone and call me back on
a set cell phone number(doesn't need to be the same as the CID). How do I do
this on this thing?  I dunno much about AGI so any pointers would be nice:)

Thanks,

Dinesh.