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Page 56 / 66 Scroll up to view Page 51 - 55
Wireless Cable Voice Gateway CG3000/CG3100 User Manual
6-4
Troubleshooting
v1.0, July 2009
Troubleshooting the ISP Connection
If your gateway is unable to access the Internet and your Cable Link LED is on, you may need to
register the Cable MAC Address and/or Device MAC Address of you gateway with your cable
service provider.
Additionally, your PC may not have the gateway configured as its TCP/IP gateway. If your PC
obtains its information from the gateway by DHCP, reboot the PC and verify the gateway address.
See the link to the online document
“ITCP/IP Networking Basics” in Appendix B
.
Troubleshooting a TCP/IP Network Using a Ping Utility
Most TCP/IP terminal devices and routers contain a ping utility that sends an echo request packet
to the designated device. The device then responds with an echo reply. Troubleshooting a TCP/IP
network is made easier by using the ping utility in your PC or workstation.
Testing the LAN Path to Your Gateway
You can use ping to verify that the LAN path to your gateway is set up correctly.
To ping the gateway from a PC running Windows 95 or later:
1.
From the Windows toolbar, click on the Start button and select Run.
2.
In the field provided, type Ping followed by the IP address of the gateway, as in this example:
3.
Click OK.
You should see a message like this one:
Pinging <IP address> with 32 bytes of data
If the path is working, you see this message:
Reply from < IP address >: bytes=32 time=NN ms TTL=xxx
If the path is not working, you see this message:
Request timed out
Page 57 / 66
Wireless Cable Voice Gateway CG3000/CG3100 User Manual
Troubleshooting
6-5
v1.0, July 2009
If the path is not working correctly, you could have one of the following problems:
•
Wrong physical connections.
–
Make sure the LAN port LED is on. If the LED is off, see
“Using LEDs to
Troubleshoot” on page 6-2
.
–
Check that the corresponding Link LEDs are on for your network interface card and
for the hub ports (if any) that are connected to your workstation and gateway.
•
Wrong network configuration.
–
Verify that the Ethernet card driver software and TCP/IP software are both installed
and configured on your PC or workstation.
–
Verify that the IP address for your gateway and your workstation are correct and that
the addresses are on the same subnet.
Testing the Path from Your PC to a Remote Device
After verifying that the LAN path works correctly, test the path from your PC to a remote device.
From the Windows run menu, type:
PING -n 10
<IP address>
where <
IP address
> is the IP address of a remote device such as your ISP’s DNS server.
If the path is functioning correctly, replies as in the previous section are displayed. If you do not
receive replies:
•
Check that your PC has the IP address of your gateway listed as the default gateway. If the IP
configuration of your PC is assigned by DHCP, this information will not be visible in your
PC’s Network Control Panel. Verify that the IP address of the gateway is listed as the default
gateway. See the link to the online document
“ITCP/IP Networking Basics” in Appendix B
.
•
Check to see that the network address of your PC (the portion of the IP address specified by
the netmask) is different from the network address of the remote device.
•
Check that your Cable Link LED is on.
•
If your ISP assigned a host name to your PC, enter that host name as the Account Name in the
Basic Settings screen.
Page 58 / 66
Wireless Cable Voice Gateway CG3000/CG3100 User Manual
6-6
Troubleshooting
v1.0, July 2009
Page 59 / 66
Default Settings and Technical Specifications
A-1
v1.0, July 2009
Appendix A
Default Settings and Technical Specifications
Factory Default Settings
You can return the gateway to its factory settings. On the bottom of the gateway, press and hold the
Restore Factory Settings button
for over 7 seconds. The gateway resets, and returns to its
factory settings.
Your device will return to the factory configuration settings shown in the
following table.
Gateway Login
User login URL
User name and password (case
sensitive)
admin/password
Local Network (LAN)
LAN IP
192.168.0.1
Subnet mask
255.255.255.0
DHCP server
Enabled
DHCP starting IP address
192.168.0.10
DHCP Ending IP address
192.168.0.19
Firewall
Inbound communication from the Internet
Disabled (except traffic on port 80, the http port)
Outbound communication to the Internet
Enabled (all)
Source MAC filtering
Disabled
Internet Connection
WAN MAC address
Use default hardware address
WAN MTU size
1500
Page 60 / 66
Wireless Cable Voice Gateway CG3000/CG3100 User Manual
A-2
Default Settings and Technical Specifications
v1.0, July 2009
Technical Specifications
The table below describes the technical specifications for the gateway.
Wireless
Wireless communication
Enabled
SSID name
Wireless
Security
Disabled
Broadcast SSID
Enabled
Transmission speed
Auto
a
Country/region
United States (varies by region)
RF channel
6
Operating mode
g and b
Data rate
Best
Output power
Full
Access point
Enabled
Authentication type
Open System
Wireless card access list
All wireless stations allowed
a. Maximum Wireless signal rate derived from IEEE Standard 802.11 specifications. Actual throughput will
vary. Network conditions and environmental factors, including volume of network traffic, building
materials and construction, and network overhead, lower actual data throughput rate.
Feature
Description
Network Protocol and Standards Compatibility
Data and Routing Protocols:
TCP/IP, DHCP server and client, DNS relay, NAT (many-to-one),
TFTP client, VPN pass through (IPSec, PPTP)
Power Adapter
North America (input):
120V, 60 Hz, input
All regions (output):
15 V DC @ 1.2A output, 15W maximum
Physical Specifications
Dimensions:
6.9 by 4.5 by 1.2 in. (175 by 114 by 30 mm)
Weight:
0.68 lb (0.31 kg)

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