User`s manual

Chapter 2 Chapter 2
44
Figure 2-3 MUXpro 820 rear panel (DC)
The components located on the front panel are arranged in several functional
groups:
 System status indicators: The groups of indicators located in the lower middle
side of the panel display the system status.
Table 2-1 Front Panel Description of MUXpro 820
LED
Indicator /
Buttons
Status Description
LOS Red Alarm in SDH channel 1/channel 2
Off SDH L1/L2 is in normal condition
PWR Green Power ON
Off Power OFF
MAJOR Red Major alarm occurred in the system
Off No major alarm
MINOR Yellow Minor alarm occurred in the system
Off No minor alarm
TST Yellow For test purpose, when loopback function is enabled,
LED will turn to yellow
Off Loopback function disabled
ACO Yellow After pressing ACO button, LED will turn to yellow instead
RST Press Reset the hardware by pressing this button
ACO Press Alarm Cut Off button, press to clear the alarm
 The aggregated interfaces area: The aggregated interfaces (at the left side)
include optical interfaces.
The optical interfaces include two pairs of optical connectors, identified as Optical
1 and Optical 2. Each pair consists of a transmit (TX) connector and a receive (RX)
connector. Link status indicators are located to the right of each pair of connectors.
 Auxiliary connector area: includes the ALARM and CRAFT connectors.