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Chapter 4
Using the telephony modem
This chapter describes the controls and features available on your telephony modem and
covers basic troubleshooting procedures.
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Indicator lights for your telephony modem
(page 29)
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Indicator lights for your telephony modem
(page 29)
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(page 31)
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(page 31)
Indicator lights for your telephony modem
Your telephony modem has LED indicator lights to assist in troubleshooting.
Battery mismatch
If your telephony modem alternates flashing the battery light and all other lights, the
installed battery is incompatible with your telephony modem. Remove the battery and
install one of the batteries described in
Battery installation and removal
(page 16) .
Wiring problems
If your telephony modem 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 your telephony modem, replace the
telephone cable, or contact a wiring technician for assistance.
SURFboard
®
SBV3202 DOCSIS 3.0 telephony modem for Xfinity
®
customers User Guide STANDARD Revision x.3
29