Troubleshooting guide

Troubleshooting Guide
135
• There may be a problem with your cellular device's firmware. Verify
that your device is using the latest version of operating software offered
by its manufacturer. If you have an alternate method of connecting to
the Internet, you can find links to the latest firmware for many devices
on Cingular's laptop support web page
.
Error 679: Cannot Detect a Carrier
This error usually has one of the following causes:
• You are not using the correct network profile to establish the connection
or the profile you are using is not configured correctly. Try selecting an
alternate connection profile from the Select GSM Connection Profile
section of the Connections menu or check with your IT administrator to
see if you have a custom APN for connecting to the Cingular network.
• The network profile you are using to establish the connection has an
incorrect dialed number or access point name (APN). Verify the
contents of these fields. See How to Edit a Network Profile
for more
information.
• The Subscriber Identity Module (SIM) in your cellular device has not
been properly setup or has not been configured for data service.
Contact Cingular Customer Care for Additional Support
.
Error 680: There is No Dial Tone
This error typically occurs only when you are using an external wireless
device (such as a phone) rather than a device that is internal to your PC.
The following causes are typical:
Another Program is Using Your Wireless Device
This error can appear if another program is already using your wireless
device. Shut down any other programs that may be using your wireless
device and then try to connect again.
Incorrect Device Selected
Verify that the device selected on the GSM tab of the Settings window
is the
device you wish to use for cellular connections.