Appendix
ELSA TanGo 2000
20
Status display and troubleshooting
The LEDs on the front panel show the condition of the interface lines or the condition of
the ISDN S
0
connection.
Status display
Green and yellow LEDs on the front panel of the ISDN terminal adapter serve as the
status display of the ISDN connection.
Green LED
The green LED shows the status of your ISDN line and the connection to the exchange.
A
S
0
status
B
S
0
line
C
a/b Port 1
D
a/b Port 2
5
TxD (D1) – Data or command from local PC to ISDN terminal adapter
6
RxD (D2) – Data or messages from ISDN terminal adapter to local PC
7
DTR (S1) – Computer operational
8
RTS (S2) – Switch on transmit
9
CTS (M2) – ISDN terminal adapter clear to send
J
DCD (M5) – Connection established
