As voice and data communications increasingly migrate to Internet networks and voice over IP (VoIP), communications security has taken on added importance for customer privacy and regulatory compliance in contact center and other consumer-oriented industries. This paper discusses the OSI Model for network and communications system security and how it applies to the Customer Interaction Center (CIC) application server, with specific emphasis on how version 2.4 of the CIC software conforms to an organization's existing network operating system environment and security policies for compliance requirements.