Chapter 1 Introducing the ISG50
ISG50 User’s Guide
33
Connect the frame ground before you connect any other cables or
wiring.
Figure 8 Frame Ground
1.4 Front Panel
This section introduces the ISG50’s front panel.
Figure 9 ISG50-PSTN Front Panel
Figure 10 ISG50-ISDN Front Panel
1.4.1 Front Panel LEDs
The following table describes the LEDs.
Table 1 Front Panel LEDs
LED COLOR STATUS DESCRIPTION
PWR Off The ISG50 is turned off.
Green On The ISG50 is turned on.
Red On There is a hardware component failure. Shut down the device,
wait for a few minutes and then restart the device (see Section 1.7
on page 35). If the LED turns red again, then please contact your
vendor.
SYS Green Off The ISG50 is not ready or has failed.
On The ISG50 is ready and running.
Blinking The ISG50 is booting.
Red On The ISG50 had an error or has failed.
