The 56K DDS optical isolator cards isolate a 56K DDS network over a switched network. Data is sent at different rates from 2.4 kbs to 72 kbs. Both CFJ and OEI optical modules are locally powered from -48Vdc. LEDs on the faceplate of the OEI card provide operational status. The CFJ optical module interfaces with the C.O. while the OEI optical module interfaces with the Station-terminating equipment.
Digital Data Service (from 2.4 kbps through 72 kbps, inclusive)
Data 56K DDS Locally Powered Cards