DESC: By connecting a synchronous modem to an EIA-422 port on the Digi AccelePort EPC/X host adapter, this EPC/CON-16 Concentrator can be placed at a remote location and attached to another synchronous modem. Now you can replace costly and slower multiplexers with economical synchronous modems, CSUs/DSUs, ISDN terminal adapters or high-speed fractional T1 modems. As a result, you can configure your remote concentrators as seamless extensions of a Digi AccelePort EPC/X system delivering "local" performance for each remote user.