Chapter 1: Connections and Setup
Cable Modem Overview
Front Panel
The following illustration shows the front panel of the model:
The LEDs on the front panel are described in the table below (from left to right):
THG570
Power
DS
US
ONLINE
LINK
TEL1
TEL2
Description
ON
ON
ON
ON
ON
ON
ON
Power on 0.25 sec
Boot-up
Operation
X
FLASH FLASH FLASH
X
X
X
Following system initialization
complete to (before) DS scanning
ON
FLASH
OFF
OFF
X
X
X
During DS scanning and acquiring SYNC
ON
ON
FLASH
OFF
X
X
X
From SYNC completed, receiving UCD to
ranging completed
ON
ON
ON
FLASH
X
X
X
During DHCP, configuration file
download, registration, and Baseline
Privacy initialization
ON
ON
ON
ON
X
X
X
Operational (NACO=ON)
DOCSIS
Start-up
Operation
ON
FLASH FLASH
OFF
X
X
X
Operational (NACO=OFF)
FLASH FLASH FLASH FLASH FLASH
X
X
Wait registration with all DS and all
US – Lights Flash sequentially from the
right to left
Minimum duration 3 seconds
X
X
X
X
OFF
X
X
From 1 to 4 DS, from 1 to 4 LEDs are
ON.
From 5 to 8 DS, From 1 to 4 LEDs are
flashing
Duration 3 seconds
OFF
X
X
X
X
X
X
From 1 to 4 US, from 1 to 4 LEDs are
ON.
Channel
Bonding
Operation
FLASH FLASH FLASH FLASH FLASH
X
X
Wait registration with all DS and all
US – Lights Flash sequentially from the
left to right
Minimum duration 3 seconds
ON
ON
ON
ON
X
FLASH
OFF
MTA DHCP
ON
ON
ON
ON
X
OFF
FLASH
MTA SNMP/TFTP
MTA
initialization
ON
ON
ON
ON
X
FLASH FLASH
RSIP for NCS/Register for SIP
3