what are the different for callback in a2billing?

jason3886

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Apr 19, 2009
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#1
Hello,
I am new for calling card system.
what are the different for callback in a2billing?
I saw my extensions_a2billing.conf like

[custom-a2billing]
exten => _X.,1,Answer
exten => _X.,n,Wait(1)
exten => _X.,n,DeadAGI(a2billing.php|1)
exten => _X.,n,Hangup

[a2billing-callback]
exten => _X.,1,DeadAGI(a2billing.php|2|callback)
exten => _X.,n,Hangup

[custom-a2billing-callback]
exten => _X.,1,DeadAGI(a2billing.php|2|callback)
exten => _X.,n,Hangup

[a2billing-cid-callback]
exten => _X.,1,DeadAGI(a2billing.php|2|cid-callback|1)
exten => _X.,n,Hangup

[custom-a2billing-allcallback]


so what are their meaning and how /when to use these different callback?
thanks.

Regards,
Jason
 

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