a2billing enabled calling card with pin number

inbound calls to

[a2billing-out]
exten => _X.,1,AGI(a2billing.php,1)
exten => _X.,n,Hangup()



a2billing settings


cid_askpincode_ifnot_callerid=yes

use_dni=no

number_try=2

play_audio=yes

this will eneable  the ivr asking for pin # ( card number)