Nortel Communication Server 1000, one element of a complete portfolio of unified communication solutions from Nortel, is a full-featured, highly scalable IP communications system that meets the needs of enterprises from small to large.  Communication Server 1000 offers a comprehensive array of reliability and survivability mechanisms to ensure the integrity of your network, while enabling communications security through a full suite of security features and capabilities. Communication Server 1000 extends Nortel’s comprehensive array of business-critical telephony features and multimedia applications to any user that needs them — anywhere on the network.