ADTRAN TSU IQ Card Type T1 DSU with Frame Relay Monitoring Chip Set Unidentified I/O Options V.35 DTE port, test jack - in, test jack - out, test jack - monitor, power, control port (RJ-45), network port (RJ-45), LAN interface module Maximum Data Rate 1.544Mbps Line Coding AMI, B8ZS Framing D4, ESF Data Bus External [Image] CONNECTIONS Function Label Function Label Frame relay network CN1 V.35 DTE port CN6 port (RJ-45) Test jack - in CN2 Power CN7 Test jack - out CN3 10 BaseT Ethernet CN8 interface (RJ-45) Test jack - monitor CN4 Power switch SW1 VT 100 terminal port CN5 (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