[Serusers] parallel fork woes

Hi- I am having a problem where if I parallel fork a call, my failure_route gets called after the caller hangs up. I thought adding t_check_status("487") to the failure_route would take care of that, but it still t_relays when I don't want it to. This only seems to be a problem if it parallel forks and one of the SIP targets is not available. If I dial an alias with a single [not forked] target the t_check_status("487") works fine. Here is my code.. any thoughts? Thanks much. Dan route { <<<< Registration code snipped for brevity >>>> if(lookup("aliases")) { xlog("L_NOTICE", "%ci: alias lookup changed uri to %ru\n"); # If alias points outbound, forward it without question. if (!(uri==myself)) { xlog("L_NOTICE", "%ci: outbound alias\n"); route(4); # relay with hunt on failure break; }; }; if ( (uri=~"^sip:911@.*") | (uri=~"^sip:011[0-9]+@.*") | (uri=~"^sip:1[0-9]{10}@.*") ) { route(3); break; }; # Local location route(4); # relay with hunt on failure } /* end of initial routing logic */ route[4] { xlog("L_INFO", "r4: Relay with Hunt\n"); # If an invitation, we want to hunt on failure if(method == "INVITE") { t_on_failure("1"); # first hunt }; if (!lookup("location")) { xlog("L_NOTICE", "%ci: no location for %ru\n"); }; append_hf("P-hint: relay\r\n"); if (!t_relay()) { sl_reply_error(); break; }; } failure_route[1] { xlog("L_INFO", "failure+route+1 %ru\n"); revert_uri(); setflag(9); # Check to see if the call was cancelled if( t_check_status("487") | method == "CANCEL") { xlog("L_INFO", "t_check_status is 487\n"); break; } prefix("h1-"); if(lookup("hunt")) { # Hunt table is an exact copy of aliases xlog("L_NOTICE", "%ci: fail_r_1: hunt changed URI to %ru, relaying\n"); append_branch(); append_hf("P-hint: pt-hunt\r\n"); t_relay(); break; } else { xlog("L_NOTICE", "%ci: r8: no further hunts, giving up\n"); break; }; }