Overview Installation Troubleshooting
Contact
FAQ
Specifications Glossary License
Configuration:
Basic Advanced TCP/IP Wireless
VT2400/VT2500 Series Voice Gateway User Guide
116
Troubleshooting
If the solutions listed here do not solve your problem, contact your cable provider. Before calling your cable
provider, try pressing the reset button on the rear panel. Resetting the VT2500 may take 5 to 30 minutes. Your
service provider may ask for the status of the lights as described in “
Front-Panel Lights and Error Conditions
”.
Problem
Possible Solutions
Green POWER light
is off
Check that the AC power adapter is properly plugged into the electrical outlet and the
VT2400/VT2500
.
Check that the electrical outlet is working.
Cannot send or
receive data or
phone calls
or
No dial tone
Be sure the telephone line cord is connected to the
VT2400/VT2500
.
Check all other cabling between the modem, the
VT2400/VT2500
, and the computer. Be sure
you used the cables provided with the
VT2400/VT2500
. All Ethernet cables must be
straight-through cables.
Check the lights on the modem front panel. For information, see your broadband modem user
guide.
Check the POWER light (see
“Front Panel”
on page 5).
A wireless client(s)
cannot send or
receive data (
VT2500
only)
•
Be sure that your wireless adapter (PCI card, Notebook or Ethernet adapter) on the PC is
installed correctly and is active.
•
Be sure that your wireless adapter’s radio signal is enabled. Review your adapter’s
documentation for further instructions.
•
Be sure that your wireless adapter for your PC and the wireless router security settings are
the same so that it will allow your computer to access the wireless network. Also, verify that
the list of
Restricted Wireless MAC Addresses
(on the WIRELESS Page of the Web-based
Configuration Utility is not configured to block your PC. For details on adjusting your security
settings, please refer to the descriptions of the WIRELESS and SECURITY Pages in Section
3: Configuration.
•
Be sure that your wireless adapter is within range of the voice gateway and is not behind an
obstruction. For example, metal structures will interfere with the signal, as will 2.4 GHz
cordless phones and microwaves.
•
Be sure that the PC’s wireless adapter antenna is properly connected.
A wired client
cannot send or
receive data
(
VT2400/VT2500
)
•
If you have cable TV, check that the TV is working and the picture is clear. If you cannot
receive regular TV channels, the data service will not function.
•
Check the coaxial cable at the SBG900 and wall outlet. Hand-tighten if necessary.
•
Check the IP address. Follow the steps for verifying the IP address for your system. See
“Configuring TCP/IP”. Call your cable provider if you need an IP address.
•
Check that the Ethernet cable is properly connected to the SBG900 and the computer.
Slow wireless
transmission speed
with SPA enabled
•
On the Wireless > SECURITY — basic page, check whether the WPA Encryption type is
TKIP. If all of your wireless clients support AES, change the WPA Encryption to AES as
described in step 4 in
“Configuring WPA on the VT2500”
on page 96.”
