beautypg.com

Polycom ViewStation EX4000 User Manual

Page 121

background image

Chapter 6 - Testing and Troubleshooting

© Polycom, Inc.

111

Indicator Lamps on the Quad BRI Network Interface Module

The Quad BRI network interface module uses pairs of indicator
lamps associated with each BRI line to provide status indications.
The table below shows the meanings of the LED pair associated with
one line. Note that the lines in use may not always display the same
status. If this is the case, you should investigate the cause. .

Red and yellow
LEDs on

Receiving clock sync, and receiving AIS Alarm
Indication Signal (unframed all-ones)

Green LED on

System fully synchronized with the network and
ready to use

Table 6-2. PRI indicator lamps - Peripheral side

Lamp behavior

Meaning

Amber LED on

Booting (brief) or starting software update (over
60 seconds)

Amber and green
LEDs on

Software update in progress

Green LED on

Ready

a

a. If the PRI network interface module is connected to an external
power source, the green LED turns on after several seconds, even
if the peripheral link cable is not connected.

Table 6-3. Quad BRI Indicator Lamps

Indication

Meaning

Green LED

Off = no connection to the switch, or no clock

On = clock is synchronized with the switch

Yellow LED

Off = in reset mode, booting

On = active

Both LEDs on

Normal operation

Table 6-1. PRI indicator lamps - Network side (Continued)

Lamp behavior

Meaning