A system processes calls in an Internet Protocol (IP) communications network. The system includes a lightweight directory access protocol (LDAP) database, an LDAP sever, and a redirect server. The LDAP database stores a group of IP communication service attributes. The LDAP server receive a request for a database update, extracts the group of IP communication service attributes from the LDAP database, and transfers the extracted IP communication service attributes to the redirect server. The redirect server stores the extracted IP communication service attributes and processes a call using the stored IP communication service attributes.