Farallon Communications 612 - Manual (Page 103)

Troubleshooting 7-3
B2
Yellow
or
green
B-2 Channel Indicator. The activity state of the B-2 channel. Green indicates
a data call. Yellow indicates an analog (voice) call.
■ If a call is in a dialing state, the LED flashes.
■ When a call is active, the LED stays lit. (The color of the LED (green or
yellow) indicates if the call is a data call or an analog call.)
■ When the call is disconnected, the LED goes off.
Send Green
Send Data. Indicates that information is being transmitted over the serial
data por t from the computer to the ISDN modem.
Receive Green
Receive Data. Indicates that information is being transmitted over the serial
data por t to the computer from the ISDN modem.
Ready Green
Data Terminal Ready. Indicates that communication between the ISDN
modem and the computer has been established.
LED Color Description