The Model CMX-808 and Model CMX-320 are cost effective Fiber Optic Multiplrxers for EIA-232 asynchronous applications.  The Model CMX-808 provides for eight channels of operation that can also be doubled when used without control leads and with "Y" cables. Supported asynchronous speeds are up to 19.2kbps.  The CMX-808 is a standalone unit and comes with 25-pin "D" type connectors. 

The Model CMX-320 is designed for EIA-232 asynchronous applications and can be configured for 16 or 32 channels. These channel capacities can also be doubled when used without control leads and with "Y" cables. Supports asynchronous speeds of up to 19.2kbps The CMX-320 can be installed into a standard 19-inch rack or mounted on a wall and comes with 25-pin "D" type connectors.