Re: [SR-Users] Last negative 5XX reply not getting relayed

Hi Alex, # ----- tm params ----- modparam("tm", "failure_reply_mode", 3) I use drouting, here's the main logic. request_route { ... if (is_method("INVITE") && !has_totag()) { ... # handle DR failure t_on_failure("MANAGE_DR_FAILURE"); if (!do_routing("$avp(drgroup)")) { sl_reply("503", "Unknown destination"); exit; } # Relay the request to gateway route(DR_RELAY); } } # DR relay route[DR_RELAY] { if (!route(RELAY)) { sl_reply_error(); }; exit; } # DRouting failure route failure_route[MANAGE_DR_FAILURE] { if (t_is_canceled()) { exit; } if (t_check_status("486|600")) { xlog("L_INFO", "received BUSY, stop trying"); # -- curious, 486 gets relayed fine exit; } # try next GW if (use_next_gw()) { t_on_failure("MANAGE_DR_FAILURE"); xlog("L_INFO", "MANAGE_DR_FAILURE: Call from <$fu> with username <$fU> going to <$ru>\n"); route(RELAY); exit; # -- Trunk failover to PSTN number } else if (is_avp_set("$avp(s:failover)") && $avp(direction) == "in") { $ru="sip:" + $avp(s:failover) + &quot;(a)someothergateway.com&quot;.com"; # -- basic routing, to improve by sending back to DRouting with updated $rU xlog("L_INFO", "MANAGE_DR_FAILURE: No more gateways, sending call to trunk failover destination <$ru>...\n"); route(RELAY); } else { xlog("L_WARN", "No more routes available\n"); #t_reply ("503", "Service Unavailable"); # -- why do we have to force a reply instead of proxy relaying whatever it is exit; } } On Mon, May 14, 2018 at 11:34 AM, Alex Balashov &lt;abalashov(a)evaristesys.com&gt; wrote: