2-2 CHAPTER 2: INSTALLING THE 3C882 ISDN MODEM
Familiarizing Yourself with the 3C882 ISDN Modem
You should familiarize yourself with the components of the
front panel and back panel of the 3C882 ISDN modem prior
to installation.
The LED status display, shown in Figure 2-2, consists of eight
front panel LEDs that are described in Table 2-1.
Figure 2-2 Front Panel LED Indicators
Figure 2-3 shows the back panel.
Figure 2-3 Back Panel Connectors
Table 2-1 Front Panel LED Indicator Deļ¬nitions
PWR TEST D B1 B2 SD RD DTR
3Com
Impact IQ
TM
3 Com
RESET
9 VDC
.6A MAX
RS-232 ISDN U
12
LED Color Description
PWR Green Power Indicator. Lit when power is on and remains lit as long
as power is supplied to the unit.
TEST Green Self-Test/Status. Flashes when the 3C882 ISDN modem is
executing its power-up self-test or a user-initiated reset. If the
results of the self-test or reset are normal, the LED goes off. If
the result of the self-test is abnormal and a fault is detected,
the LED remains lit but does not flash.
