Hi, I set fr_inv_timer=150 and use lcr module to balance (and failover) between two gateways.
In the failure route I set (simplified):
failure_route[FAILURE_ROUTE_OUT] {
if (t_local_replied("last")) { next_gw(); t_relay(); }
}
This means that if a INVITE routed to gateway-1 replies a provisional response but no final response within 150 seconds, then Kamailio should generate a local 408 and failure route would relaty to gateway-2.
But what I see is that such "timeout" time is 75 seconds (the half of 150 !).
I remember a similar "issue" when handling with SRV DNS domains returning more than one destinations, but in my case I just use single IP's in lcr module. But the fact is that I use exactly 2 gateways in lcr (150/2 = 75). But anyhow it doesn't make sense.
Do I miss something? Thanks.
PD: Important, could occur the same with fr_timer?