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TG852
Power
Ethernet
DS
US
Online
WiFi
Secure
Tel 1
Battery
Tel 2
46
Safety
Getting
Started
Battery
Installation
Installation
Ethernet
Configuration
Usage
Troubleshooting
Glossary
Touchstone TG852 Telephony Gateway User’s Guide
Indicator Lights for the TG852
The Touchstone Telephony Gateway has ten LED indicator lights to assist in trou-
bleshooting.
Wiring Problems
If the Telephony Gateway begins flashing all its lights for more than 10 seconds, this
indicates a problem with the telephone wiring — the red and green wires may be
shorted (touching), or there may be undesired voltage on the lines. If this pattern
persists for more than 10 seconds, disconnect the telephone lines from the Tele-
phony Gateway, then call a wiring technician for assistance.
Patterns: Normal Operation (LAN and Telephone)
The following table shows light patterns for the Ethernet and wireless LANs, and the
telephones, during normal operation.
Mode
Ethernet
WiFi
Tel 1 / Tel 2
AC Power
On
= Computer
Connected
Off = Computer
not connected
Flash
= Com-
puter Activity
On
= WiFi
Enabled
Off = WiFi
Disabled
Flash
=
Computer Activity
On
= On-hook
Flash
= Off-hook
Off = disabled
No AC Power
Off
Off
On
= On-hook
Flash
= Off-hook
Off = disabled
Firmware Upgrade
(normal operation)
(normal operation)
(normal operation)
Power
DS
US
Online
Ethernet
WiFi
Secure
Tel 1
Tel 2
Battery
Page 47 / 60
Patterns: Normal Operation (WAN and Battery)
The following table shows light patterns during normal operation.
Note 1
:
Your cable company may configure the Telephony Gateway to always
display the
DS
and
US
indicators in green regardless of the connection
speed.
Mode
Power
DS
US
Online
Battery
AC Power
Good
On
Yellow
1
=
Connected
to the
Internet
(high
speed)
Green
1
=
Connected
to the In-
ternet
(ultra-high
speed)
Flash
= Not
connected
to the
Internet
Yellow
1
=
Connected
to the
Internet
(high
speed)
Green
1
=
Connected
to the In-
ternet
(ultra-high
speed)
Flash
= Not
connected
to the
Internet
On
=
Internet
available
Off =
Internet
not
available
On
=
Battery
good or low
Off
=
Battery
missing
Flash
=
Battery bad
No AC
Power
Battery
Installed
Flash
Off
Off
Off
Off =
Battery
power
Flash
=
Battery bad
No AC
Power No
Battery
Off
Off
Off
Off
Off
Firmware
Upgrade
On
Flash
Flash
On
(normal
operation)
Touchstone TG852 Telephony Gateway User’s Guide
Safety
Getting
Started
Battery
Installation
Installation
Ethernet
Configuration
Usage
Troubleshooting
Glossary
47
Page 48 / 60
48
Safety
Getting
Started
Battery
Installation
Installation
Ethernet
Configuration
Usage
Troubleshooting
Glossary
Touchstone TG852 Telephony Gateway User’s Guide
Patterns: Startup Sequence
The following tables show the Telephony Gateway light patterns during each phase
of the startup sequence. There are two phases of startup; the Telephony phase and
the cable modem phase. Both are outlined below.
Telephony Start Up Sequence
Note
:
The
DS
and
US
indicators flash yellow during startup, and turn green if
the Telephony Gateway establishes an ultra-high speed connection.
Power,
DS, US,
Online
Telephone
Battery
Description
1
2
Off
Off
Off
Off
No power to Modem
Flash
Flash
Flash
Flash
Power-on Self Test
See “Cable Modem Start Up Sequence”
On
Flash
Off
Off
Retrieving telephone net-
work information
On
Off
Flash
Off
Retrieving telephone line
information
On
Flash
Flash
Off
Activating telephone
service
Normal Operation
Page 49 / 60
Cable Modem Start Up Sequence
Using the Reset Button
Use the
Reset
button, on the back of the Telephony Gateway, to reset the modem
and perform initialization as if you power cycled the unit. You may need to reset the
Telephony Gateway if you are having problems connecting to the Internet. Using
this button will be rare.
Use a pointed
non-metallic
object to press this button. The photo to the left shows
the location of the
Reset
button. The
Reset
button is recessed to prevent acci-
dental resets.
The diagram on the left shows the location of the reset button.
Resetting the Router to Factory Defaults
To reset the router to factory defaults, press and hold the
Reset
button on the back
of the Telephony Gateway for more than fifteen seconds. This restores the wireless
setup configuration and router configuration parameters to the factory defaults. You
may need to do this if a misconfiguration has locked out all access.
DS
US
Online
Description
Flash
Off
Off
Downstream search
On
Flash
Off
Downstream found; upstream search
On
On
Flash
Downstream and Upstream found;
retrieving setup information from
cable operator
On
On
On
Ready for service
Touchstone TG852 Telephony Gateway User’s Guide
Safety
Getting
Started
Battery
Installation
Installation
Ethernet
Configuration
Usage
Troubleshooting
Glossary
49
Cable
Ethernet
10/100/1000
Telephone
Reset
USB
1/2
2
2
1
4
3
Reset
Button
Page 50 / 60
Booting from Battery
The TG852 supports a “Boot from Battery” feature that allows the Telephony Gate-
way to begin service without AC power.
To start the TG852 from its battery, follow these steps:
1
If a battery is already installed in the Telephony Gateway, remove it.
2
Re-insert the battery into the Telephony Gateway (see
Battery Installation
and Removal
for details).
3
Press the
Reset
button; the Power light should turn on immediately.
Touchstone TG852 Telephony Gateway User’s Guide
Safety
Getting
Started
Battery
Installation
Installation
Ethernet
Configuration
Usage
Troubleshooting
Glossary
50
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