[SR-Users] Dispatcher is using gateways in Probing mode

Dear all, Does anyone can explain how Dispatcher module is sending calls to the gateways in the different states? I mean if I have 3 gateways and the one of them is in Probing mode why Dispatcher is continuing sending there calls? Why this gateway is not changing from Probing to Inactive since is not replaying to OPTIONS messages send by Kamailio? Configuration: modparam("dispatcher", "flags", 2) modparam("dispatcher", "ds_ping_interval", 5) modparam("dispatcher", "ds_probing_mode", 1) modparam("dispatcher", "ds_probing_threshhold", 2) modparam("dispatcher", "dst_avp", "$avp(s:dst_avp)") modparam("dispatcher", "grp_avp", "$avp(dsgrp)") modparam("dispatcher", "cnt_avp", "$avp(i:202)") modparam("dispatcher", "ds_append_branch", 0) using db for gw: setid 123,destination sip:xxx.xxxx.xxx, flag 0 ... in ROUTE: if(ds_select_domain("$avp(s:disp_dstgrp)", "4")) in Failure Route if(!ds_next_domain()) I want Dispatcher when it sees a node gateway that is dead , to Not send any other calls. Thank you in advance Alex