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CRADLEPOINT CBA750 | USER MANUAL Firmware ver. 1.9.0
© 2012 CRADLEPOINT, INC. PLEASE VISIT HTTP://KNOWLEDGEBASE.CRADLEPOINT.COM/ FOR MORE HELP AND RESOURCES PAGE 14
3.3 Common Problems
This section contains a list of some of the most common issues faced by users of the CBA750.
Please visit CradlePoint Knowledgebase at http://knowledgebase.cradlepoint.com/ for more help and answers to your
other questions.
3.3.1 Your USB Modem or Phone Does Not Work With the Router
If your USB data modem or phone is not working with the router, check the list of supported devices to ensure you
are using a supported device and carrier. The device you‟re using must be supported on the carrier network
providing your cellular service or it‟s considered an unsupported device, even if it is supported on another carrier‟s
network.
CradlePoint‟s supported device list changes regularly. We update our supported device list after a device is
certified and approved. If the device you have is NOT on the list, that means we do not support it at this time.
The SUPPORTED DEVICE list can be found at: cradlepoint.com/support/CBA750
Sometimes a USB data modem needs to be updated or have other configurations set correctly in order to make a
connection through the router. If your USB Modem has not been updated recently, it is recommended that you do
so if it is having trouble connecting to the CBA750. Simply insert your USB data modem into your PC and using the
software provided by your cellular carrier, access the Internet. Follow the directions provided to complete the
update. Once you have updated your USB data modem, reconnect the cellular device to your CradlePoint router
and connect to the Internet.
If you are using 4G modem you need to set the WiMAX Realm. This can be done at the administrative page (login
to IP address http://192.168.0.1) and go to Modem → Settings. Under Modem Specific Settings use the WiMAX
Realm Select to select your carrier. Make sure you Save Settings.
Some wireless carriers provide multiple Access Point Names that a modem can connect to. If you wish to specify
an APN, this can be done at the administrative page (login to IP address http://192.168.0.1) and go to Modem →
Settings. Enter the APN and Save Settings. Some examples of APN are isp.cingular, ecp.tmobile.com and
vpn.com. This APN will be set in the first profile position (see Modem Diagnostics). The modem must be