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Front Panel Operation
4-33980-A2-GB30-40 October 1998
Table 4-1
3800
Plus
DCP LEDs
Label Color Indicates
Pwr 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 COMSPHERE
3000 Series Carrier.
Diag
(3810
Plus
only)
green The modem has responded to a diagnostic command from network management.
Test/142 yellow The modem is involved in a test. Normal operation is not possible.
Dial green Quick Flashing – The modem is attempting to establish a call over the dial network.
Slow Flashing – The modem is in Dial Standby mode.
ON – The modem has established a dial connection.
OFF – A dial connection does not exist.
RI/125
(3811
Plus
only)
green A ringing signal is being received.
Busy
(3811
Plus
only)
yellow ON – The modem is placed in a forced busy condition and is off-hook.
Serv
(3811
Plus
only)
yellow ON – The modem is connected to the carrier service line rather than the normally assigned
dial 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, or the modem is configured to force ON CTS, or AT commands are
enabled.
DSR/107
(3811
Plus
only)
green DSR signal is ON, or the modem is configured to force ON DSR.
DTR/108 green The DTE has turned ON DTR, or the modem is configured to ignore DTR.
LSD/109 green The modem has detected a valid carrier signal and is capable of transferring data to the DTE,
or the modem is configured to force ON LSD.
Front Panel
(3811
Plus
only)
yellow ON – The modem is connected to the carrier’s SDCP.
Rate
(3810
Plus
only)
yellow ON – The modem is connected at a data rate lower than the line rate it is configured for.
OFF – The modem is connected at its configured line rate.