Using FQDN instead of ip for services

Hi, can I use FQDN on SEMS, for example for contacting cdr, routing ecc, can I put FQDN instead of direct ips? Does SEMS provide a resolution of FQDN so for example if the CDR DB at a specific ip dies I can change the ip directly on dns without restarting SEMS service and let the queue proceed on new ip changed via dns with low TTL?
Thanks a lot