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For reporting purposes, call attempts from Termination Customer Trunk Groups only count towards the A Leg CDR. Termination Vendor Trunk Groups only count towards the B Leg plus the A Leg with a 200OK.
Example
A SIP Invite comes in a Termination Customer (A Leg) Trunk Group, B Leg call attempt to Vendor X fails, B Leg call attempt Vendor Y fails, B Leg call attempt to Vendor Z succeeds (e.g. a SIP 200OK response is provided). This Call flow generates one A leg CDR and two B leg CDRs.
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