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Page 101 / 110 Scroll up to view Page 96 - 100
4028315 Rev A
101
Frequently Asked Questions
Q.
Can I watch TV and surf the Internet at the same time?
A.
Absolutely! If you subscribe to cable television service, you can watch TV and
use your residential gateway at the same time by connecting your TV and your
residential gateway to the cable network using an optional cable signal splitter.
Q.
Can I run more than one device on the modem?
A.
Yes. A single residential gateway will theoretically support up to 253 Ethernet
devices utilizing user-supplied Ethernet hubs or routers that you can purchase at
your local PC or office supply retailer.
Page 102 / 110
102
4028315 Rev A
Having Difficulty?
Having Difficulty?
Common Troubleshooting Issues
I don't understand the front panel status indicators
See Front Panel LED Status Indicator Functions, for more detailed information on
front panel LED status indicator operation and function.
The modem does not register an Ethernet connection
 
Verify that your computer has an Ethernet card and that the Ethernet driver
software is properly installed. If you purchase and install an Ethernet card,
follow the installation instructions very carefully.
 
Verify the status of the front panel LED status indicators.
The modem does not register an Ethernet connection after connecting to a hub
If you are connecting multiple PCs to the residential gateway, you should first
connect the modem to the uplink port of the hub using the correct crossover cable.
The LINK LED of the hub will illuminate continuously.
The modem does not register a cable connection
The modem works with a standard 75-ohm RF coaxial cable. If you are using a
different cable, your residential gateway will not function properly. Contact your
service provider to determine whether you are using the correct cable.
Verify that you have followed the procedures in How Do I Troubleshoot My Internet
Service Installation?.
There is no dial tone when I lift the telephone handset
 
Your telephone wiring may be connected to the wrong RJ-11 port on the
residential gateway. The residential gateway has two telephone ports. Verify that
you are connected to the correct telephone port.
 
There may be a problem with your telephone set. Use a different telephone set
and listen to hear dial tone.
 
There may be a problem with your home telephone wiring. Use a telephone and
connect directly to the same RJ-11 port on the back of the unit. If the dial tone is
working here but does not work at other locations in the home, a professional
may need to diagnose and repair a problem with your telephone wiring.
 
Verify that the phone company has removed the previous telephone service from
your home telephone wiring.
Your telephone service may not be enabled from your cable telephony service
provider. Contact your cable telephony service provider for more information.
Page 103 / 110
4028315 Rev A
103
Tips for Improved Performance
Tips for Improved Performance
Check and Correct
If your residential gateway does not perform as expected, the following tips may
help. If you need further assistance, contact your service provider.
 
Verify that the plug to your residential gateway AC power is properly inserted
into an electrical outlet.
 
Verify that your residential gateway AC power cord is not plugged into an
electrical outlet that is controlled by a wall switch. If a wall switch controls the
electrical outlet, make sure the switch is in the
ON
position.
 
Verify that the
POWER
and
ONLINE
LED status indicators on the front panel of
your residential gateway are illuminated.
 
Verify that your cable service is active and that it supports two-way service.
 
Verify that all cables are properly connected, and that you are using the correct
cables.
 
Verify that your TCP/IP is properly installed and configured if you are using the
Ethernet connection.
 
Verify that you have called your service provider and given them the serial
number and MAC address of your residential gateway.
 
If you are using a cable signal splitter so that you can connect the residential
gateway to other devices, remove the splitter and reconnect the cables so that the
residential gateway is connected directly to the cable input. If the residential
gateway now functions properly, the cable signal splitter may be defective and
may need to be replaced.
 
For best performance over an Ethernet connection, your PC should be equipped
with a 10/100BASE-T network interface card.
Page 104 / 110
104
4028315 Rev A
Front Panel LED Status Indicator Functions
Front Panel LED Status Indicator Functions
Initial Power Up, Calibration, and Registration (AC Power applied)
The following chart illustrates the sequence of steps and the corresponding
appearance of the residential gateway front panel LED status indicators during
power up, calibration, and registration on the network when AC power is applied to
the residential gateway. Use this chart to troubleshoot the power up, calibration, and
registration process of your residential gateway.
Note:
After the residential gateway completes Step 7 (Registration Completed), the
modem proceeds immediately to Normal Operations. See Normal Operations (AC
Power applied).
Front Panel LED Status Indicators During Initial Power Up, Calibration, and
Registration
Part 1, High Speed Data Registration
Step:
1
2
3
4
5
6
Front Panel
Indicator
Self
Test
Downstream
Scan
Downstream
Signal Lock
Ranging
Requesting
IP Address
Request High Speed
Data Provisioning
File
1
POWER
On
On
On
On
On
On
2
DS
On
Blinking
On
On
On
On
3
US
On
Off
Off
Blinking
On
On
4
ONLINE
On
Off
Off
Off
Off
Blinking
5
LAN1-
LAN4
On
On or
Blinking
On or
Blinking
On or
Blinking
On or
Blinking
On or
Blinking
6
WIRELESS
Off
On or
Blinking
On or
Blinking
On or
Blinking
On or
Blinking
On or
Blinking
7
TEL 1
On
Off
Off
Off
Off
Off
8
TEL 2
On
Off
Off
Off
Off
Off
Part 2, Telephone Registration
Step:
7
8
9
10
11
Front Panel
Indicator
Data
Network
Registration
Complete
Requesting
Telephone IP
Address
Request
Telephone
Provisioning
File
Restarting
Voice Service
Telephone
Registration
Complete
1
POWER
On
On
On
On
On
2
DS
On
On
On
On
On
3
US
On
On
On
On
On
4
ONLINE
On
On
On
On
On
5
LAN1-
LAN4
On or
Blinking
On or Blinking
On or Blinking
On or Blinking
On or Blinking
6
WIRELESS
On or
Blinking
On or
Blinking
On or
Blinking
On or
Blinking
On or Blinking
7
TEL 1
Off
Blinking
Off
Blinking
On
8
TEL 2
Off
Off
Blinking
Blinking
On
Page 105 / 110
4028315 Rev A
105
Front Panel LED Status Indicator Functions
Normal Operations (AC Power applied)
The following chart illustrates the appearance of the residential gateway front panel
LED status indicators during normal operations when AC power is applied to the
gateway.
Front Panel LED Status Indicators During Normal Conditions
Front Panel Indicator
Normal Operations
1
POWER
On
2
DS
On
3
US
On
4
ONLINE
On
5
LAN1-LAN4
±
On - When a single device is connected to the Ethernet port
and no data is being sent to or from the modem
±
Blinks - When only one Ethernet device is connected and
data is being transferred between the consumer premise
equipment (CPE) and the wireless home gateway
±
Off - When no devices are connected to the Ethernet ports
6
WIRELESS
±
On - When the wireless access point is enabled and
operational
±
Blinks - When data is being transferred between the CPE
and the wireless home gateway
±
Off - When the wireless access point is disabled by the user
7
TEL 1
±
On - When telephony service is enabled
±
Blinks - When line 1 is in use
8
TEl 2
±
On - When telephony service is enabled
±
Blinks - When line 2 is in use

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