Digicom COMSPHERE 3910 Installation And Operation Manual page 40

COMSPHERE 3900 Series Modems
The standalone Model 3910 modem's DCP has 13 light-emitting diodes (LEDs), and the
carrier-mounted Model 3911 has 16 LEDs. These LEDs are listed and described in Table 3-1.
LEDs specific to one model type have the appropriate model number shown in the table.
Label Color
Pwr green
Alrm red
Diag green
(3910 only)
Test/142 yellow
Dial yellow
RI/125 green
(3911 only)
Busy yellow
(3911 only)
Serv yellow
(3911 only)
SQ yellow
TXD/103 green
RXD/104 green
RTS/105 green
CTS/106 green
DSR/107 green
(3911 only)
DTR/108 green
LSD/109 green
Rate yellow
(3910 only)
Front Panel yellow
(3911 only)
3-4
Table 3-1
Model 3910 and Model 3911 DCP LEDs
Power has been applied to the modem.
Flashing. A major alarm has been detected in a remote 391x Series modem.
ON. A major alarm has been detected in the local modem. (For Health and
Status alarm conditions, refer to Table 4-1 in Chapter 4, Status Branch.)
The modem is receiving diagnostic communications (either a command or a
status poll).
Flashing. The modem is involved in a firmware upgrade. Normal operation is not
possible.
ON. The modem is involved in a test. Normal operation is not possible.
OFF. The modem is not involved in a test or firmware upgrade.
Flashing. The modem is attempting to establish a call over the dial network, or
the modem is in Dial Standby mode.
ON. The modem has established a dial connection.
OFF. A dial connection does not exist.
A ringing signal is being received.
The modem is placed in a forced busy condition and is off-hook.
The modem is connected to the carrier service line rather than the normally
assigned network.
The receive telephone line signal is degraded or the modem's data path has
been blocked (SQ flashes).
The modem is receiving data from the DTE to transmit. (ON equals space.)
Data is being transferred to the DTE. (ON equals space.)
RTS signal is ON.
CTS signal is ON.
DSR signal is ON.
The DTE has turned ON DTR or the modem has forced DTR ON.
The modem has detected a valid carrier signal and is capable of transferring
data to the DTE.
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.
The modem is connected to the carrier's SDCP.
September 1998
Indicates
3910-A2-GN32-40