The ERM-DXC is a 4U 19(23)" 11-slot rack type E1 Digital Cross Connect for Fractional E1 network access which is nested in a concentrator and provides an economic solution for central site users.

ERM-DXC I/O cards for installation into the ERM-DXC rack. A CPU card is installed into the last slot for configuration and management. The CPU card provides both local control via an RS-232 menu driven console port and remote management using proprietary NMP software. Each DXC-E1 card may be linked to another ERM-DXC Rack to provide the main functions of a DDN network.

The ETU-DXC is a 1U 19"stand-alone or rack mountable Digital Cross Connect offering two models; the ETU-DXC/8 and the ETU-DXC/16.Each DXC-E1 card may be linked to another ERM-DXC Rack to provide the main functions of a DDN network.