we have 2 upstream carriers .. one we are currently using and one whice we have an account with and use as a fallback if the upstream carrier is to expensive we have 2 servers one for business one for residential customers ... the incoming call needs to ber routed to either business or residential servers after being altered to to match our dialing patterns and then sent to external carriers if that then is forwarded to external numbers like a mobile the 2 servers business and residential are running freeswitch the business server has multidomains and the residential is single domain so far we take the number from the upstream carrier .. massage it correctly to match our dialing scheme .. and pass it to server 1 ... server 1 returns 404 not found then passes the call back to the upstream carrier ... and does not seem to concider the next server at all this is from log file syslog.1:Mar 20 18:24:51 cr-1 kamailio[13959]: {1 39416 INVITE a7b4b42426c37563c33a6ce4f258448f3126813e(a)123.102.36.131} 10(13973) DEBUG: registrar [lookup.c:233]: lookup_helper(): '61390928411' Not found in usrloc Vixtel Adrian Bartlett Senior Network Administrator Phone 03 9095 2068 On Thu, Mar 22, 2018 at 6:12 AM, Henning Westerholt <hw(a)kamailio.org> wrote: