Cisco ubr924 Installation And Startup page 12

Initialize the Router (continued)
LED
Label
OK
ACT
1, 2, 3 or 4
V OK
10
V1
V2
LINK
DS
US
DSNR
Description
On = Power-on and self-test have completed successfully, the system image has been booted, and the
system is operational.
Blink = After power-on and self-test have completed successfully, LED blinks as the system image is
booted.
Off = No power
On = Cable activity
Off = No activity
On = Ethernet link up for the port
Blink = Activity on Ethernet link for the port
Off = Ethernet link down for the port
On = Healthy VoIP system for a Cisco uBR924 cable access router configured to support voice
Off = VoIP system problem or the router has switched over to the PSTN
On = Call in progress on the voice port for a router configured to support voice
Off = No call
On = Call in progress on the voice port for a router configured to support voice
Off = No call
On = Cable (RF) connection up
Blink = Router searching for a downstream frequency
Off = Cable (RF) connection down
On = Router locked to a downstream frequency
Off = Router not locked to a downstream frequency or the router has not yet located a digital signal
On = Router has established communications with the CATV headend per DOCSIS
Off = Router has not completed secondary ranging
On = Receiving quality, downstream signal 5 dB above the downstream lock threshold
Off = Receiving low downstream signal strength or quality