I am facing one odd issue with Accounting on GK(using AAA), we observ that call accounting gets started at Call Ringing Stage at destination end even before Conversation starts(it looks it starts accounting after issuing the ACF to originating GW) so we do not get the actual call time which needs t be billied. Please help for this issue and also kindly confirm:
1. Whether GW CDRs(Originating or Terminating ) can only provide actual call usage time or GK can also provide the same, if GK can provide, please suggest how.
2. Can a external Server, using GKTMP API, may assist in getting actual call information like Actual Call Usage Time from GK with AAA enabled on the same.
Would appreciate your kind and quick advise on the above queries.