
Touchstone™ TM501 Telephony Modem User’s Guide 31
Getting Ethernet
Safety Started Installation Configuration Usage Troubleshooting Glossary
Indicator Lights
The Touchstone Telephony Modem has six LEDs to assist in troubleshooting.
Patterns: Normal Operation
The following table shows light patterns during normal operation.
The “Over Current Protection” mode means that the Telephony Modem has detected for-
eign voltage on the telephone line. Disconnect the telephone line from the Telephony
Modem and correct the problem (usually a wiring fault) before re-connecting the Tele-
phony Modem.
Mode Power DS US Online Link Telephone
AC Power On
On =
Connected
to the
Internet
Flash =
Not
connected
to the
Internet
On =
Connected
to the
Internet
Flash = Not
connected
to the
Internet
On =
Internet
Available
Off =
Internet
not
available
On =
Computer
Connected
Off =
Computer
not
connected
Flash =
Computer
Activity
On =
On-hook
Flash =
Off-hook
Off =
disabled
No AC Power Off Off Off Off Off Off
Software
Upgrade
On Flash Flash On
(normal
operation)
(normal
operation)
Over Current
Protection
Flash Flash Flash Flash Flash Flash
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