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Front Panel
The front panel has 16 front panel LEDs that provide operating status.
The Front Panel
Front Panel LED Descriptions
LED
Description of LAN 1 & 2 LEDs
The LINK LED indicates link integrity for the LAN Ethernet port. If the Ethernet link is valid at
LINK
either 10 Mbps or 100 Mbps, the LINK LED is lit. If the Ethernet link is invalid, the LINK LED is off.
The ACT (Activity) LED indicates either transmit or receive activity on the LAN Ethernet port.
ACT
When activity is present on the LAN Ethernet port, the ACT LED is lit. When no activity is present
on the LAN Ethernet port, the ACT LED is off.
The 100MB LED indicates the speed of the LAN Ethernet port. The 100MB LED is lit if the LAN
100MB
Ethernet port is linked at 100 Mbps. The 100 MB LED is off at 10 Mbps.
LED
Description of LIne LI-1 thru LI-4 LEDs
The LA (Link Active) indicates layer 1 is up. LA blinks when Los of Frame Alignment (LFA) but not
LA
Loss of Signal (LOS).
The LC indicates a red alarm.
LC
The LS indicates a yellow alarm.
LS
LED
Description of Support Modem LEDs
The CD (Carrier Detect) LED lights when the modem detects a valid carrier signal from another
CD
modem. It is on when the modem is communicating with the other modem. It is off when the link is
broken.
The RD (Read Data) LED flashes when the modem is receiving data from another modem.
RD
The DTR (Data Terminal Ready) LED lights when the operating system detects and initializes the
DTR
modem.
The TD (Transmit Data) LED flashes when the modem is transmitting data to another modem.
TD
LED
Description of System LEDs
The HDD ACT (Hard Disk Drive Activity) LED lights when the MultiAccess hard disk drive is
HDD
accessed.
ACT
The ALERT LED lights and the system beeps when memory DIMM is bad, missing, or if other
ALERT
rudimentary hardware failure.
POWER The POWER LED is off when the MultiAccess is in a reset state. When the POWER LED is lit, the
MultiAccess is not in a reset state.
MultiAccess Communications Server MA30120 User Guide
Chapter 1 – Introduction and Description
7
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