The Front Panel Leds; Connecting The Tiny Usb Isdn Ta 128 - Billion TA128 User Manual

tiny USB ISDN TA128

2.2 The Front Panel LEDs

LED
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
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.
2.3 Connecting the tiny USB ISDN
TA 128
Please refer to the following instructions and figure for installing
tiny
the
1. Connect the ISDN S
2. Connect the other end of USB cable to the PC. Refer to
6
USB ISDN TA 128:
the following figure.
You should not connect the tiny USB ISDN TA
128 to a bus-powered USB hub device, such as
keyboard, because there could be not enough
power for the ISDN TA.
Meaning
line to the RJ-45 jack.
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