ADTRAN DSU IQ Card Type DSU with Frame Relay Monitoring Chip Set Unidentified I/O Options V.35 DTE port, 25-pin DTE port, power, control port (RJ-45), network port (RJ-45), LAN interface module Maximum Data Rate 64Kbps Data Bus External [Image] CONNECTIONS Function Label Function Label 10 BaseT Ethernet CN1 V.35 DTE port CN5 interface (RJ-45) Frame relay network port CN2 Power CN6 (RJ-45) 25-pin DTE port CN3 Power switch SW1 VT 100 terminal port CN4 (RJ-45) DIAGNOSTIC LED(S) LED Color Status Condition RS Unidentified On RTS signal high RS Unidentified Off RTS signal low CS Unidentified On CTS signal high CS Unidentified Off CTS signal low TD Unidentified On Data is being transmitting from DTE TD Unidentified Off Data is not being transmitting from DTE RD Unidentified On Data is being received from network RD Unidentified Off Data is not being received from network CD Unidentified On Frame synchronization is established. Device is ready to transmit/receive data CD Unidentified Off Frame synchronization is not established. Device is not ready to transmit/receive data ALM Unidentified On Open loop, loss of frame synchronization, dial backup mode, or problem with dial backup line alarm condition detected on network ALM Unidentified Off Open loop, loss of frame synchronization, dial backup mode, or problem with dial backup line alarm condition not detected on network TST Unidentified On Device is conducting a test TST Unidentified Off Device is not conducting a test