[SR-Users] modify To header, prefix + ip, using dispacher module.

Hey, Thank you in advanced for the time taken on my question! I have an environment phone---sbc---kamailio---gw1, gw2 I am using kamailio 4.2.0, quite basic config, using dispatcher module to route to the gw and to monitor them with options. I have a file dispatcher.list with the two gw ips: # $Id$ # dispatcher destination sets # # line format # setit(int) destination(sip uri) flags(int,opt) priority(int,opt) attributes(str,opt) # gateways 1 sip:10.X.X.38:5060 IP 1 sip:10.X.X.39:5060 AP I have to modify the TO header, it must be prefixed and gw ip must be placed there (gw requirements) I use on the routing function ds_select_domain("1", "8") t_on_failure("RTF_DISPATCH"); and just before the ROUTE(RELAY) I have: # Add profix to gw: 0199 subst_uri('/^sip:(.*)/sip:0199\1/i'); # add prefix to RURI subst_hf("To", "/(.*):(.*)@(.*)$/\1:0199\2@$rd>/", "a"); #add prefix to TO, modify ip on TO use ruri ip It works fine if the first gw is available, but if the first option (which is the last gw on the list) is not accessible, it waits for the 30s and then tries the second one, but the ip on the TO header is not correct anymore, since it is the first gw and not the second. Question: why does it wait until the timeout if it is monitoring it with option and seeing it is not reachable? I tried modifying again the TO header with: subst_hf("To", "/(.*)@(.*)$/\1@$rd>/", "a") before the route(relay) on the failure routine, but it does not work properly, I am getting strange TO header like: To: <sip:0199XXXX@10.X.X.39> <sip:XXXXXX@10.X.X.38> It looks like it is not parsing the to header it has before but adding a parsed version of the original header at the end of the other one.... I tried with subst as well but the result is more or less the same. Probably there is a better way to set the prefix and the correct IP on the to header... I'll appreciate any help with this issue. Thanks again for your time Helena Helena Garcia-Nieto de Mir Morodo Group VoIP Department E-mail: helena.gnieto(a)morodo.co.uk Morodo Limited  voip(a)morodo.co.uk / www.mo-call.com Place of Registration: Companies House, England & Wales / Registered Office: 7 Breasy Place, 9 Burroughs Gardens Hendon, London NW4 4AU