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 port from the computer to the ISDN modem.
Receive Green Receive Data. Indicates that information is being transmitted over the serial
data port 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