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MultiFRAD User Guide
Front Panel Description
The front panel of the FR221 has four groups of LEDs that provide the status of the LAN connection
and the general status of the MultiFRAD. The FR221/V2 has an additional group of LEDs for its two
voice/fax channels. From left to right, the first group of LEDs indicates whether the self test passed or
failed and if the power On/Off switch on the back of the MultiFRAD is switched On. The Ethernet
LEDs display LAN activity; i.e., they show whether the MultiFRAD is connected to the LAN,
transmitting or receiving packets, and if a data collision is occurring. The Composite LEDs display the
trunk (i.e., DSU) status, show whether a trunk is ready to transmit or receive serial data, and indicate
if the trunk connection (i.e., the back panel TRUNK connector) is configured for a V.35 interface. The
data Channel 1 and data Channel 2 LEDs display the status of the two data Channels, including
whether the data Channel or the attached device is ready to transmit or receive data and if the data
Channel is configured for a V.35 serial interface. Finally (on the FR221/V2 only), the voice/fax LEDs
indicate the configuration and status of these two channels.
Figure 1-2. Front Panel
BOOT The BOOT indicator lights for 75 seconds (approx.) when power is applied to the MultiFRAD.
POWER The POWER indicator lights when the Power switch is set to the "1" (up, On) position.
RCV
Receive indicator blinks when packets are being received from the local area network.
LNK
Link indicator lights indicating that the MultiFRAD is connected to the local area network.
XMT
Transmit indicator blinks when packets are being transmitted to the local area network.
COL
Collision indicator lights when a collision is in progress, that is, when two nodes are
transmitting packets at the same time.
RCV
Receive indicator blinks when the trunk is receiving data.
CTS
Clear To Send indicator lights when the trunk is ready to transmit data.
CD
Carrier Detect indicator lights when the MultiFRAD detects a carrier signal on the trunk line.
LNK
The composite Link LED blinks slowly when it detects the frame relay management type.
Then, when at least one DLCI goes active, it blinks quickly. When all DLCIs are active, it
remains on. In PPP mode, it remains on all the time.
XMT
Transmit indicator blinks when the trunk is transmitting data.
RTS
Request to Send indicator lights then the trunk is ready to receive data.
V35
The V35 indicator lights whenever the trunk is configured for a V.35 interface; i.e., the shunt
for the trunk is in the V.35 position.
EXT
External indicator lights when the MultiFRAD is configured for an external composite device.
XMT
Transmit indicator blinks when the Channel is transmitting data to the composite link.
RCV
Receive indicator blinks when the Channel is receiving data from the composite link.
CTS
Clear To Send indicator lights when the Channel is ready to transmit data.
XMT
Transmit indicator blinks when voice packets are being transmitted to the local area network.
RCV
Receive indicator blinks when voice packets are being received from the local area network.
V35
The V35 indicator lights whenever the Channel is configured for a V.35 interface; i.e., the
Channel shunt is in the V.35 position.
8
ETHERNET
COMPOSITE (DSU, TRUNK)
DATA CHANNELS
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