[Freeswitch-users] [Not sending re-invite on 5XX message]

Hi Users, We are using freeswitch to send calls to carrier through SRV records, what happens is if carrier sends 503 response FreeSWITCH thinks of that call as rejection and sends to other available IPs under SRV record. That's not leading us to non 5xx error, as the carrier told us that if you get 503 don't expect any other response from other available IPs. So is there anyway i can restrict FS to not send re-invites in case of a 503 response? Regards Bilal Abbasi