Asterisk A2Billing IVR wrong call duration

Asterisk Asterisk Integration
1

Hello,
Will be grateful if someone can help with what seems easy but doesn’t work as expected.
Setup is : A2Billing with Calling Card IVR system - asks for PIN and then dials over outbound SIP channel to a termination provider.
The problem is that the call is billed to customer including IVR duration (not only outbound call duration - as logical).
If end destination do not answer - the call is 0 duration (so IVR duration is not billed in this case).
May be I am missing something basic but…

Regards,

2

This will be the result of design decisions made by the A2Billing people. This forum does not provide A2Billing support.

3

You should look into the difference between CDR(duration) & CDR(billsec), and which A2Billing is using.