Specifications

24 AR Router
C613-03058-00 REV A
Figure8: Front and rear panels of the AT-AR390 and AT-AR395 routers.
Table 8: Functions of the front panel LEDs on the AT-AR370(U) router .
LED Function
LAN Link Lit when the Ethernet interface is connected to a device (e.g., a hub),
which is generating link pulses. This LED is normally lit.
LAN Txd Lit when data is being transmitted over the Ethernet interface.
LAN Coll (yellow) Lit when a collision is detected on the Ethernet interface.
LAN Rxd Lit when data is being received on the Ethernet interface.
WAN Syn Lit when data is being transmitted or received over the synchronous
interface.
WAN ISDN Lit when data is being transmitted or received over the ISDN interface.
WAN Active Lit when the U interface is in the Activated state (i.e., it is fully
operational at layer 1).
System (red) This LED is not normally lit. It is used to signal various system conditions
(e.g., when the processor executes the reboot sequence). Generally it
signals a possible fault condition, but it will light briefly during power-
up and operator initiated reboot.
Run Lit when the internal processor is executing code. If the processor stops
for any reason (a fault condition), then the LED will not be lit.
Power Lit when power is supplied and the router is switched on.
Rear Panel
AR390FRP
AR390
LEDs
Access Router
Front Panel
COLLISION
10BASE-T
WAN
LINK
TRANSMIT
RECEIVE
RXD
TXD
ACTIVE
SYSTEM
R
U
N
POWER
AR390
Model name
ETHERNET 0
PORT 1 (RS232)
HUB PC
PORT 0 (RS232)
CONFIG
MDX
Asynchronous
ports
DIP
switch
4321
Ethernet port
75Ω Tx 75Ω Rx
PRI 0
120Ω
120Ω
G.703/PRI ISDN port
100–240 VAC, 50–60Hz, 300mA.
DISCONNECT MAINS SUPPLY BEFORE REMOVING LID
NO USER SERVICEABLE PARTS
Power inlet