COMSPHERE 3800 Series Modems4-4 September 1998 3810-A2-GB30-30Status IndicatorsThe 3800 Series modems’ status indicatorscontinuously provide information on the modem’soperating condition. All of the status indicators on theModel 3810 and Model 3820 appear on the DCP(Figures 4-1 and 4-2), whereas the status indicators for thecarrier-mounted Model 3811 are located on theModel 3811’s faceplate, the SDCP, and the SDU faceplate(Figure 4-3).The standalone Model 3810 modem’s DCP has12 LEDs, and the carrier-mounted Model 3811 has16 LEDs. These LEDs are listed and described inTable 4-1; LEDs specific to one model type have theappropriate model number shown in the table.Table 4-1Model 3810 and Model 3811 DCP LEDsLabel Color IndicatesPwr green ON. Power is on and the modem is capable of operating.Alrm red Flashing. A malfunction has been detected in either the modem or COMSPHERE3000 Series Carrier.Diag(3810 only)green The modem has responded to a diagnostic command from network management.DTR/108 green The DTE has turned ON DTR or the modem has forced DTR ON.Test/142 yellow The modem is involved in a test. Normal operation is not possible.Dial(3811 only)green Flashing. The modem is attempting to establish a call over the dial network.ON. The modem has established a dial connection.OFF. A dial connection does not exist.RI/125(3811 only)green A ringing signal is being received.Busy(3811 only)yellow ON. The modem is placed in a forced busy condition and is off-hook.Serv(3811 only)yellow ON. The modem is connected to the carrier service line rather than the normally assigneddial network.SQ yellow The receive telephone line signal is degraded.TXD/103 green The modem is receiving data from the DTE to transmit. (ON equals space.)RXD/104 green Data is being transferred to the DTE. (ON equals space.)RTS/105 green RTS signal is ON.CTS/106 green CTS signal is ON.LSD/109 green The modem has detected a valid carrier signal and is capable of transferring data to theDTE.DSR/107(3811 only)green DSR signal is ON.Rate(3810 only)yellow ON. The modem is connected at a data rate lower than the data rate it is configured for.OFF. The modem is connected at its configured data rate.Front Panel(3811 only)yellow ON. The modem is connected to the carrier’s SDCP.
