User`s manual

Chapter 2 Chapter 2
46
 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.
 ALM:
The ALARM relay contact is to extend the major and minor alarm of MUXpro
820 to the office audible and visual alarm system. Refer to Appendix A for its
pin assignment.
 CRAFT:
The Front panel CRAFT port serves as a normal supervise port and operates
at standard RS-232 DCE mode in DB-9 type connector, it can directly connect
to PC COM port for operation.
Table 2-2 Front Panel Description of MUXpro 8216
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
A
fter pressing ACO button, LED will turn to
yellow instead
Off Alarm disappears, back to normal condition
TRI
Yellow Abnormal tributary E1 card
Off Normal tributary E1 card