1-7
Cisco 800 Series Routers Hardware Installation Guide
78-5373-04
Chapter 1 Overview
LEDs
Figure 1-9
Cisco 804 IDSL Router Back Panel
LEDs
Table 1-3
summarizes the function of each LED.
30772
IDSL
Cable lock
Use cable
lock to
physically
secure
router.
Ethernet ports
Connect Ethernet
network devices.
Console port
Connect PC or
terminal.
IDSL port
Connect to IDSL
wall jack.
Locking power
connector
Connect power
supply.
2
3
4
TO HUB
TO PC
CONSOLE
Power switch
l = On.
= Standby or no
power output.
Cisco 804 IDSL
ETHERNET 10 BASE T
1
TO HUB/TO PC
(for Ethernet port 1)
Determines cable
type for Ethernet
device connection.
Table 1-3
LED Functions
LED
Color
Function
OK
Green
On when power is supplied to the router and when the router completes the
self-test procedure and begins operating.
NT1
Green
Not applicable for Cisco 801 and 803 routers.
On when the internal NT1 and the ISDN switch are synchronized.
Blinks when the internal NT1 and the ISDN switch are attempting to
synchronize.
LINE
Green
On when the ISDN interface and the ISDN terminal device are synchronized.
LAN
Green
On when packets are sent to or received from an Ethernet port.
LAN RXD
Green
Blinks when an Ethernet port receives a packet.
LAN TXD
Green
Blinks when an Ethernet port sends a packet.
LKØ, LK1,
LK2, LK3
Green
Cisco 803 and 804 routers only.
On when the Ethernet device is connected.
Off when the Ethernet device is not connected.
Blinks when the connection has a problem. See the
“Troubleshooting”
chapter.
ETHERNET
1, 2, 3, 4
Green
Cisco 804 IDSL routers only.
On when the Ethernet device is connected.
Off when the Ethernet device is not connected.
Blinks when the connection has a problem. See the
“Troubleshooting”
chapter.