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PN 365-095-33947 x.1 SBV2402 Internet & Voice cable modem for Xfinity® customers user guide
21
Chapter 5
Using the telephony modem
This chapter describes the controls and features available on your SBV2402 and covers basic
troubleshooting procedures.
Indicator lights for the SBV2402
The SBV2402 LED indicator lights can be helpful when troubleshooting.
Wiring problems
If your SBV2402 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 SBV2402, replace the telephone cable, or
contact a wiring technician for assistance.
Patterns: normal operation
The following table shows light patterns during normal operation:
Mode
Power
US/DS
Online
Tel 1 / Tel 2
AC power
On
On = connected to the
Internet (ultra-high speed)
Flash = not connected to
the Internet
On = Internet avail
Off = Internet not
available
On = on-hook
Flash = off-hook
Off = disabled
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