FaxPress Enterprise is Castelle's newest addition to its family of network fax servers. FaxPress Enterprise is a digital solution for T1, E1 and ISDN environments, and is ideally suited for organizations with high fax traffic. The FaxPress Enterprise builds on FaxPress Premier hardware features and has been significantly enhanced to improve performance. To better support customers in a Microsoft Windows 2003 environment, FaxPress Enterprise includes Microsoft's Windows Server 2003 based SAK 3.0. Castelle has also replaced the processor with an Intel Pentium 4 processor, and upgraded the internal memory to 1 GB.