[Serusers] CDR Issues

OK, i've run into a problem with the CDR Creation. If you have 2 users who call each other, talk a while and then instead of hanging up decide to pull the plugs from their phones (or terminitate their application), no complete CDR is generated, the INVITE and ACK are logged, but since no one realy hangs up there won't be a BYE record, so no CDR end/total time and no billable time. Use the / a rtpproxy you would say, to bad it suffers from the same problem, if both partes put the call on hold and pull the plug the call keeps existing and once again an incomplete CDR. Has anyone ever suffered the same problem? And what is the most reliable way to generate CDRs? Kind regards, E. Versaevel