User`s guide

Indicator Lights for the CM900A/S Models
The Touchstone Cable Modem has five indicator lights to assist in troubleshooting.
Indicator Lights: Normal Operation
The following table shows light patterns during normal operation. If colors are not
indicated, they do not affect the status.
Note 1: Your cable company may configure the Cable Modem to always display
the DS, US, and Link indicators in green regardless of the connection
speed or swap the meaning (speed indication) of yellow and green.
Mode Power DS US Online Link
AC Power
Good
On
Yellow
1
=
Connected to
the Internet
(high speed)
Green
1
=
Connected to
the Internet
(ultra-high
speed)
Flash = Not
connected to
the Internet
Yellow
1
=
Connected to
the Internet
(high speed)
Green
1
=
Connected to
the Internet
(ultra-high
speed)
Flash = Not
connected to
the Internet
On = Internet
Available
Off = Internet
not available
Yellow
1
=
10/100 BaseT
Ethernet
connected
Green
1
= 1000
BaseT Ethernet
connected
Off = Computer
not connected
Flash =
Computer
Activity
No AC Power Off Off Off Off Off
Firmware
Upgrade
On Flash Flash On
(normal
operation)
Touchstone CM900 Cable Modem User’s Guide
Safety
Getting
Started Installation
Ethernet
Configuration Usage Troubleshooting Glossary
37
Link
Online
US
DS
Power
CM900
Link
Online
US
DS
Power