[Users] Multiple hops Accounting

Hi, I try to have exploitable accounting for multiple domains and multi hops routing. I've previously tried for weeks on asterisk without success, even with adding c modules and playing with cdr fork :-( He is a case: - sip.domainA and sip.domainB point to the same Openser server. - 4(a)sip.domainA is dbaliased to 5(a)sip.domainB - 5(a)sip.domainB is dbaliased to 6@asteriskServer - 6@asteriskServer make a dial to phone2(a)sip.domainA I dial 4 on phone1 and get this INVITE routing phone1(a)sip.domainA === RURI:4@sip.domainA ==> openser openser === RURI:6@asteriskServer ==> asteriskServer asteriskServer == RURI:phone2@sip.domainA ==> openser openser ==> phone2 this works and phone2 ring, I take the call and hangup phone1 after some time. Now in acc table I find 15 records (7 INVITEs, 5 ACKs and 3 BYEs) The 3 BYE records seems correct (one from phone 1 to openser, one from openser to asteriskBox and the last from asteriskBox to phone 2 via openser). But I can't find a way to match the 7 INVITEs to the 3 BYEs, even with adding src&dst legs src_ip info and so on. == Call ID, src, dst, total duration, billing duration == - 1234, phone1@sip.domainA,4@sip.domainA,10,8 - 1234, 4@sip.domainA,5@sip.domainB,10,8 - 1234, 5@sip.domainB,6@asteriskBox,10,8 - 1234, 6@asteriskBox,phone2@domainA,10,8 Is it a complete dream or do you have an idea ? Manuel