Westermo IDW-90 - Manual (Page 18)

18 6620-2200
LED indicators
LED Status Description
L1
ISDN Line status
See
below LED normally showing the status of the ISDN
S0 interface. L1 together with L2 is also used
to indicate error conditions in the IDW-90 and
the connection to the ISDN S0 interface.
L2
ISDN Data connection
See
below LED Normally showing the state of the data
connection
ANL
Analogue line
OFF No analogue connection established
BLINK Analogue call in progress
ON Analogue line established
DCD
Data Carrier Detect
OFF The DCD signal is inactive.
ON The DCD signal is active.The behavior of the
DCD-line is programable, see configuration
command cdcd. Normaly used to indicat an
active connection
TD
Transmit Data
LED showing data from the DTE, the LED will
blink when data received
RD
Receive Data
LED showing data transmitted to the DTE, the
LED will blink when data transmitted
RTS
Request to Send
OFF RTS signal is inactiveIf used for flow control
this indicates DTE not ready to receive
ON RTS signal is activeIf used for flow control this
indicates DTE ready to receive
DTR
Data Terminal Ready
OFF DTR Signal from DTE is inactive
ON DTR Signal from DTE is activeThe use of the
DTR signal is programmable, see configuration
command cdtr
Status Description
L1 L2
ON OFF S0 connection OK
ON 1 short blink/s Call setup in progress
ON 1 long blink/s Waiting for B channel synchronization
ON ON Data connection is established
OFF OFF No power or Hardware error
0.5 s ON
0.5 s OFF OFF No S0 connection