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ROI-S04488
MAINT indicator
Lights when the following conditions are controlled by the PC:
• Maintenance condition,
• Loopback condition,
• BER AIS condition,
• MOD CW condition,
• MUTE (TX output power) condition,
PWR switch:
Turns input DC power on or off.
PWR indicator:
Lights when equipment is in normal operation.
RESET switch:
RESET switch initiates the CPU operation.
CALL switch:
Transmits calling signal on engineering orderwire (EOW). Then, buzzer
in opposite station rings.
EOW jack:
Gives access to EOW signal immediately when headset is connected.
100M indicator:
Lights when 100 Mbps is selected in data speed of LAN interface.
Goes out when 10 Mbps is selected in data speed of LAN interface.
LINK/ACT indicator:
Lights when the IDU and associated equipment are linked.
COLX/DUPLEX indicator:
Lights when :
• The input/output LAN signal is in Full Duplex mode,
• When the LAN signal in Half Duplex mode, a collision
condition occurs.
OPERATION
3-21
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