Arris Touchstone TG2492, User Manual, Page: 34 / 43

Chapter 6
:
Using the Telephony Gateway
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 Startup Sequence
Power,
US/DS, Online
Telephone
1
Telephone
2
Description
Off Off Off No power to modem
Flash Flash Flash Power-on Self Test
See Cable Modem Startup Sequence (page 34)
On Flash
Off Retrieving telephone network
information
On
Off
Flash
Retrieving telephone line
information
On Flash Flash
Activating telephone service
Note: The US/DS indicator flashes during startup, and turns on when the Telephony
Gateway establishes a connection.
Cable Modem Startup Sequence
US/DS Online Description
Slow Flash
(1/second)
Off Downstream acquisition in
progress
On
(until
Upstream
acquisition
starts)
Off Downstream acquisition
completed
Fast Flash
(3/second)
Off Upstream acquisition in progress
On
Slow Flash (during
acquisition)
On (when modem IP
address obtained)
Upstream acquisition completed,
ready for service
Release 24 STANDARD 1.1 March 2015 Touchstone TG2492 Telephony Gateway User Guide 34
Copyright ARRIS Enterprises, Inc. 2015. All Rights Reserved.