Introduction
Installation
Troubleshooting
Glossary
License
SBV5220 VoIP Cable Modem User Guide
3
Top and Front Panel
For added security, you can press the Standby button
(1)
to suspend your Internet connection. No data is
transmitted or received from the Internet when the Standby light is on. All other front-panel lights turn off until you
press the Standby button again, except for Tel 1 and Tel 2.
The lights provide information about power, communications, and errors:
During normal operation, the Power, DS, US, and Online lights are on and the Link light flashes when the VoIP
cable modem is transferring data.
Key Light
Flashing
On
2
Power
Startup diagnostics in progress.
VoIP cable modem powered on.
3
DS (downstream)
Scanning for a receive (
downstream
)
channel connection.
Downstream channel connected.
4
US (upstream)
Scanning for a send (
upstream
)
channel connection.
Upstream channel connected.
5
Online
Scanning for a network connection.
Startup process completed.
6
Link
Transmitting or receiving data.
A device, such as a computer or hub, is connected to
the USB or Ethernet connectors on the back panel.
7
Tel 1
Connected and activated,
telephone is off-hook (in use).
Connected and activated, the telephone is on-hook
(not in use).
8
Tel 2
Connected and activated,
telephone is off-hook (in use).
Connected and activated, the telephone is on-hook
(not in use).
9
Battery
AC power not present.
Normal condition indicating that AC power present and
the battery is in good condition.
10
Standby
This light does not flash.
Internet service blocked because the Standby button
was pressed. If this light is on, all other lights are off,
except for Tel 1 and Tel 2.
The model number on your VoIP
cable modem may be different
than in the illustrations and
screen images in this guide.
