Indicator Lights For The T25 - Arris SURFboard T25 User Manual

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Indicator lights for the T25

The T25 has LED indicator lights to assist in troubleshooting.
Patterns: normal operation
The following table shows light patterns during normal operation.
Table 3: T25 light patterns: normal operation
Mode
AC power
No AC power
Firmware
upgrade
Patterns: startup sequence
The following tables show the T25 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.
Table 4: Telephony startup sequence
Power, US/DS,
Online
Off
Flash
On
®
SURFboard T25 Cable Modem with Xfinity Voice User Guide STANDARD Revision 2.0
Blinking
Telephone line 1 is off-hook or call
is in progress.
Telephone line 2 is off-hook or call
is in progress.
Power US/DS
On On = Connected to
the Internet (ultra-
high speed)
Flash = Not
connected to the
Internet
Off Off
On Flash
Telephone 1
Off
Flash
Flash
On (Solid)
Telephone service for line 1 is connected
and activated; on-hook.
Telephone service for Line 2 is connected
and activated; on-hook.
Online
On = Internet
available
Off = Internet
not available
Off
On
Telephone 2 Description
Off No power to modem
Flash Power-on self-test
Off Retrieving telephone network information
Chapter 3: Product overview
Tel 1 / Tel 2
On = On-
hook
Flash = Off-
hook
Off =
disabled
Off
(normal
operation)
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