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Billion mini USB ISDN TA128
6
2.2 The Front Panel LEDs
LED Meaning
USB When this LED is lit, it indicates that the USB port
is connected to the PC and working properly.
ISDN
When this LED is lit, it indicates that the ISDN
S
0
bus is activated. It will flash when there is message
transfer in the D channel.
B1 When this LED is lit, it indicates that the ISDN B1
channel is being accessed. It will flash when there
is data transfer in the B1.
B2 When this LED is lit, it indicates that the ISDN B2
channel is being accessed. It will flash when there
is data transfer in the B2.
PC When this LED is lit, it indicates that there is at least
one application program using the USB ISDN
TA128.
2.3 Connecting the Billion mini USB
ISDN TA128
Please refer to the following instructions and figure for installing
the mini
USB ISDN TA128:
1. Connect the ISDN S
0
line to the RJ-45 jack.
2. Connect the USB cable to the USB port and connect the
other end of USB cable to the PC. Refer to the
following figure.