Multi Tech Equipment MA30120 quick start Front Panel LED Descriptions

MultiAccess Quick Start GuideIntroduction and Description

Front Panel

The MultiAccess has 16 front panel LEDs to provide operating status.

Front Panel LED Descriptions

LED	Description of LAN 1 & 2 LEDs
LINK	The LINK LED indicates link integrity for the LAN Ethernet port. If the Ethernet link is valid at
	either 10 Mbps or 100 Mbps, the LINK LED is lit. If the Ethernet link is invalid, the LINK LED is off.
ACT	The ACT (Activity) LED indicates either transmit or receive activity on the LAN Ethernet port.
	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.
100MB	The 100MB LED indicates the speed of the LAN Ethernet port. The 100MB LED is lit if the LAN
	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
LA	The LA (Link Active) indicates layer 1 is up. LA blinks when Los of Frame Alignment (LFA) but not
	Loss of Signal (LOS).
LC	The LC indicates a red alarm.
LS	The LS indicates a yellow alarm.
LED	Description of Support Modem LEDs
CD	The CD (Carrier Detect) LED lights when the modem detects a valid carrier signal from another
	modem. It is on when the modem is communicating with the other modem. It is off when the link is
	broken.
RD	The RD (Read Data) LED flashes when the modem is receiving data from another modem.
DTR	The DTR (Data Terminal Ready) LED lights when the operating system detects and initializes the
	modem.
TD	The TD (Transmit Data) LED flashes when the modem is transmitting data to another modem.
LED	Description of System LEDs
HDD	The HDD ACT (Hard Disk Drive Activity) LED lights when the MultiAccess hard disk drive is
ACT	accessed.
ALERT	The ALERT LED lights and the system beeps when memory DIMM is bad, missing, or if other
	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.

Note: The Back Panel is described in the Cabling section.

Multi-Tech Systems, Inc. PN 82001423L 3