Cable Modem Start Up Sequence
The following table shows the start-up sequence for the cable modem portion of the
Telephony Modem. Indicator color is not important.
Indicator Lights for the TM722G Models
The Touchstone Telephony Modem has eight indicator lights to assist in trou-
bleshooting. Only TM722G models have a Battery light.
Battery Mismatch
If the Telephony Modem alternates flashing the Battery light and all other lights, the
installed battery is incompatible with the Telephony Modem. Remove the battery
and install one of the batteries described in
Battery Installation and Replacement
DS
US
Online
Link
Description
Flash
Off
Off
Off
Downstream search
On
Flash
Off
Off
Downstream found; upstream search
On
On
Flash
Off
Downstream and Upstream found;
retrieving setup information from cable
operator
On
On
On
On
Ready for service
Touchstone TM722 Telephony Modem User’s Guide
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