Embedded Server Unit and MX-ONE Server 3.2 

MX-ONE™ Telephony Server - Embedded Server Unit (ESU) The Embedded Server Unit is an IA-32-based server board embedded in the Media Gateway Classic with the following configuration: Intel® Pentium-M processor running at 1.4 GHz; 512 MB RAM; 20 GB HDD. The ESU performs exactly the same functions and runs exactly the same software as the Telephony Server.