Tadiran Telecom Coral IPx 800 Series Installation Procedure And Hardware Reference Manual page 391

3A
Table 8-1A HDC LED
Indications
Coral IPx 800 Installation Manual
8-23A
3
Front Panel Indicator
displays the HDC card front panel.
Figure 8-4
card is equipped with one LED. Before closing the front door, the LED
HDC
The
should be extinguished.
HDC red diagnostic LED
The LED remains illuminated steadily after turning on the PS19 unit. After a few
seconds, the LED should extinguish. The extinguished diagnostic LED indicates that
the HDC software has been properly initialized.
LED continuously on for more than two or three minutes, indicates a possible problem
HDC
with the card.
LED flashing indicates a diagnostic alarm as descrbied in
LED State Indication
No problem - HDC card operating normally
Steadily Off
HDC card has not initialized. It indicates a possible problem
Steadily On
with the HDC card
Diagnostic test failed by circuitry on HDC card. It indicates
Flashing
one of the following diagnostic alarms:




For further information on these diagnostic alarms, refer to
Chapter 22 of the Program Interface and Database
Reference Manual.
5 - HDLC channel
6 - PCM Highway
7 - PCM Time slot
22 - E911 Compatibility
Table 8-1A