[Serusers] Multiple INVITE's in acc table when putting caller on hold

Does anyone have a solution for eliminating multiple INVITE's in the accounting table (acc) as a result of the caller putting someone on hold? Here's my accounting section: ... modparam("acc", "log_level", 1) modparam("acc", "log_flag", 1) modparam("acc", "failed_transactions", 1) modparam("acc", "report_ack", 0) ... route[1] { # ----------------------------------------------------------------- # Default Message Handler # ----------------------------------------------------------------- t_on_reply("1"); if (method=="INVITE" || method=="ACK" || method=="BYE" || method=="CANCEL") { setflag(1); }; if (!t_relay()) { if (method=="INVITE" || method=="ACK") { end_media_session(); }; sl_reply_error(); }; }